Is Sūrat al-Zalzalah equivalent to one-fourth of the Qur’an?
The reports about Sūrat Al-Zalzalah being equivalent to one-fourth of the Qur’an have some weakness in them, although they are strengthened by the different variations as well as the multiple mursal reports (which are weak standalone). Ibn Khuzaymah categorized one particular attributed to Anas (RA) as saḥiḥ and al-Tirmidhī classified one narration as ḥasan, while others relied on the report of Ibn Abbās.

Yahya related to me from Malik from Nafi that Abdullah ibn Umar used to recite in all four rakas as when he prayed alone - in every raka the umm al-Qur'an and another sura from the Qur'an. Sometimes he would recite two or three suras in one raka in the obligatory prayer. Similarly, he recited the umm al-Qur'an and two suras in the first two rakas of maghrib.

The news about the differences amongst the people of Bani `Amr bin `Auf reached Allah's Apostle and so he went to them along with some of his companions to effect a reconciliation between them. Allah's Apostle was delayed there, and the time of the prayer was due. Bilal went to Abu Bakr and said to him, "Allah's Apostle has been delayed (there) and the time of prayer is due. So will you lead the people in prayer?" Abu Bakr said, "Yes, if you wish." Bilal pronounced the Iqama and Abu Bakr, went forward and said Takbir for the people. In the meantime Allah's Apostle came crossing the rows (of the praying people) and stood in the (first) row and the people started clapping. Abu Bakr, would never glance sideways in his prayer but when the people clapped much he looked back and (saw) Allah's Apostle . Allah's Apostle beckoned him to carry on the prayer. Abu Bakr raised his hands and thanked Allah, and retreated till he reached the (first) row. Allah's Apostle went forward and led the people in the prayer. When he completed the prayer he faced the people and said, "O people! Why did you start clapping when something unusual happened to you in the prayer? Clapping is only for women. So whoever amongst you comes across something in the prayer should say, 'Subhan-Allah' for there is none who will not turn round on hearing him saying Subhan-Allah. O Abu Bakr! What prevented you from leading the people in the prayer when I beckoned you to do so?" Abu Bakr replied, "How dare the son of Abu Quhafa lead the prayer in the presence of Allah's Apostle ?"

Once we were in the house of Abu Musa who presented a meal containing cooked chicken. A man from the tribe of Bani Taim Allah with red complexion as if he were from the Byzantine war prisoners, was present. Abu Musa invited him to share the meal but he (apologised) saying. "I saw chickens eating dirty things and so I have had a strong aversion to eating them, and have taken an oath that I will not eat chickens." Abu Musa said, "Come along, I will tell you about this matter (i.e. how to cancel one's oath). I went to the Prophet in the company of a group of Al-Ashariyin, asked him to provide us with means of conveyance. He said, 'By Allah, I will not provide you with any means of conveyance and I have nothing to make you ride on.' Then some camels as booty were brought to Allah's Apostle and he asked for us saying. 'Where are the group of Al-Ash`ariyun?' Then he ordered that we should be given five camels with white humps. When we set out we said, 'What have we done? We will never be blessed (with what we have been given).' So, we returned to the Prophet and said, 'We asked you to provide us with means of conveyance, but you took an oath that you would not provide us with any means of conveyance. Did you forget (your oath when you gave us the camels)? He replied. 'I have not provided you with means of conveyance, but Allah has provided you with it, and by Allah, Allah willing, if ever I take an oath to do something, and later on I find that it is more beneficial to do something different, I will do the thing which is better, and give expiation for my oath."

Malik said, "The imam does not come down and prostrate when he recites a piece of Qur'an requiring a prostration while he is on the mimbar."

Malik said, "The position with us is that there are eleven prescribed prostrations in the Qur'an, none of which are in the mufassal."

Malik said, "No-one should recite any of the pieces of Qur'an that require a prostration after the prayers of subh and asr. This is because the Messenger of Allah, may Allah bless him and grant him peace, forbade prayer after subh until after the sun had risen, and after asr until the sun had set, and prostration is part of the prayer. So no-one should recite any piece of Qur'an requiring a prostration during these two periods of time."

Malik was asked whether a menstruating woman could prostrate if she heard some-one reciting a passage of Qur'an requiring a prostration, and he said, "Neither a man nor a woman should prostrate unless they are ritually pure."

Malik was asked whether a man in the company of a woman who was reciting a passage of Qur'an requiring a prostration should prostrate with her, and he said, "He does not have to prostrate with her. The prostration is only obligatory for people who are with a man who is leading them. He recites the piece and they prostrate with him. Some one who hears a piece of Qur'an that requires a prostration being recited by a man who is not leading him in prayer does not have to do the prostration."

Yahya related to me from Malik from Ibn Shihab from al-Araj that Umar ibn al Khattab recited Surat an-Najm (Sura 53) and prostrated in it, and then got up and recited another sura.

Yahya related to me from Malik from Ayyub ibn Abi Tamima as- Sakhtayani from Muhammad ibn Sirin that Umar ibn al-Khattab was with some people who were reciting Qur'an. He went to relieve himself and then came back and recited Qur'an. One of the men said to him, "Amir al muminin, are you reciting the Qur'an without being in wudu?" Umar replied, "Who gave you a verdict on this? Was it Musaylima?"'

When we came to Medina accompanying the caravan, I used to preach after the dawn prayer, and prostrate on account of the recitation of the Qur'an. Ibn Umar prohibited me three times, but I did not cease doing that. He then repeated (his prohibition) saying: I prayed behind the Messenger of Allah (saws), AbuBakr, Umar and Uthman, they would not prostrate (on account of the recitation of the Qur'an) till the sun had risen.

Yahya related to me from Malik from Ibr Shihab that Abdullah ibn Abbas and Abu Hurayra differed about making up days missed in Ramadan. One of them said that they were done separately and the other said that they were done consecutively. He did not know which one of them it was who said that they were done separately.

Yahya related to me from Malik from Nafi that Abdullah ibn Umar used to recite the first ten suras of the mufassal in the subh prayer, and on a journey he would recite the ummal-Qur'an and a sura in every raka.

When the Prophet, became ill in his fatal illness, Someone came to inform him about the prayer, and the Prophet told him to tell Abu Bakr to lead the people in the prayer. I said, "Abu Bakr is a softhearted man and if he stands for the prayer in your place, he would weep and would not be able to recite the Qur'an." The Prophet said, "Tell Abu Bakr to lead the prayer." I said the same as before. He (repeated the same order and) on the third or the fourth time he said, "You are the companions of Joseph. Tell Abu Bakr to lead the prayer." So Abu Bakr led the prayer and meanwhile the Prophet felt better and came out with the help of two men; as if I see him just now dragging his feet on the ground. When Abu Bakr saw him, he tried to retreat but the Prophet beckoned him to carry on. Abu Bakr retreated a bit and the Prophet sat on his (left) side. Abu Bakr was repeating the Takbir (Allahu Akbar) of Allah's Apostle for the people to hear.

`Abdullah said, "Whenever we prayed behind the Prophet we used to recite (in sitting) 'Peace be on Gabriel, Michael, peace be on so and so. Once Allah's Apostle looked back at us and said, 'Allah Himself is As-Salam (Peace), and if anyone of you prays then he should say, at-Tahiyatu li l-lahi wa ssalawatu wa t-taiyibat. As-salamu `alalika aiyuha n-Nabiyu wa rahmatu l-lahi wa barakatuh. Assalamu `alaina wa `ala `ibadi l-lahi s-salihin. (All the compliments, prayers and good things are due to Allah; peace be on you, O Prophet, and Allah's mercy and blessings [be on you]. Peace be on us an on the pious subjects of Allah). (If you say that, it will reach all the subjects in the heaven and the earth). Ash-hadu al-la ilaha illa l-lah, wa ash-hadu anna Muhammadan `Abduhu wa Rasuluh. (I testify that there is no Deity [worthy of worship] but Allah, and I testify that Muhammad is His slave and His Apostle).

The funeral prayer should be offered for every child even if he were the son of a prostitute as he was born with a true faith of Islam (i.e. to worship none but Allah Alone). If his parents are Muslims, particularly the father, even if his mother were a non-Muslim, and if he after the delivery cries (even once) before his death (i.e. born alive) then the funeral prayer must be offered. And if the child does not cry after his delivery (i.e. born dead) then his funeral prayer should not be offered, and he will be considered as a miscarriage. Abu Huraira, narrated that the Prophet said, "Every child is born with a true faith (i.e. to worship none but Allah Alone) but his parents convert him to Judaism or to Christianity or to Magainism, as an animal delivers a perfect baby animal. Do you find it mutilated?" Then Abu Huraira recited the holy verses: 'The pure Allah's Islamic nature (true faith i.e. to worship none but Allah Alone), with which He has created human beings.' " (30.30).

Allah's Apostle said, "You will be resurrected (and assembled) bare-footed, naked and uncircumcised." The Prophet then recited the Divine Verse:-- "As We began the first creation, We shall repeat it: A promise We have undertaken. Truly we shall do it." (21.104) He added, "The first to be dressed will be Abraham. Then some of my companions will take to the right and to the left. I will say: 'My companions! 'It will be said, 'They had been renegades since you left them.' I will then say what the Pious Slave Jesus, the son of Mary said: 'And I was a witness over them while I dwelt amongst them; when You did take me up, You were the Watcher over them, and You are a Witness to all things. If You punish them, they are Your slaves, and if you forgive them, You, only You are the All-Mighty the All-Wise.' " (5.117-118) Narrated Quaggas, "Those were the apostates who renegade from Islam during the Caliphate of Abu Bakr who fought them".

While I was taking part in a Ghazwa. I heard `Abdullah bin Ubai (bin Abi Salul) saying. "Don't spend on those who are with Allah's Apostle, that they may disperse and go away from him. If we return (to Medina), surely, the more honorable will expel the meaner amongst them." I reported that (saying) to my uncle or to `Umar who, in his turn, informed the Prophet of it. The Prophet called me and I narrated to him the whole story. Then Allah's Apostle sent for `Abdullah bin Ubai and his companions, and they took an oath that they did not say that. So Allah's Apostle disbelieved my saying and believed his. I was distressed as I never was before. I stayed at home and my uncle said to me. "You just wanted Allah's Apostle to disbelieve your statement and hate you." So Allah revealed (the Sura beginning with) 'When the hypocrites come to you.' (63.1) The Prophet then sent for me and recited it and said, "O Zaid! Allah confirmed your statement."

I was with my uncle and I heard `Abdullah bin Ubai bin Salul, saying, "Don't spend on those who are with Allah's Apostle that they may disperse and go away from him." He also said, "If we return to Medina, surely, the more honorable will expel the meaner." So I informed my uncle of that and then my uncle informed Allah's Apostle thereof. Allah's Apostle sent for `Abdullah bin Ubai and his companions. They swore that they did not say anything of that sort Allah's Apostle deemed their statement true and rejected mine. Thereof I became as distressed as I have never been before, and stayed at home. Then Allah revealed (Surat Al-Munafiqin): 'When the hypocrites come to you.....(63.1) They are the ones who say: Spend nothing on those who are with Allah's Apostle ..(63.7) Verily the more honorable will expel therefrom the meaner..' (63.7-8) Allah's Apostle sent for me and recited that Sura for me and said, "Allah has confirmed your statement."

A man entered the mosque and started praying while Allah's Apostle was sitting somewhere in the mosque. Then (after finishing the prayer) the man came to the Prophet and greeted him. The Prophet said to him, "Go back and pray, for you have not prayed. The man went back, and having prayed, he came and greeted the Prophet. The Prophet after returning his greetings said, "Go back and pray, for you did not pray." On the third time the man said, "(O Allah's Apostle!) teach me (how to pray)." The Prophet said, "When you get up for the prayer, perform the ablution properly and then face the Qibla and say Takbir (Allahu Akbar), and then recite of what you know of the Qur'an, and then bow, and remain in this state till you feel at rest in bowing, and then raise your head and stand straight; and then prostrate till you feel at rest in prostration, and then sit up till you feel at rest while sitting; and then prostrate again till you feel at rest in prostration; and then get up and stand straight, and do all this in all your prayers."

That he heard `Umar's second speech he delivered when he sat on the pulpit on the day following the death of the Prophet `Umar recited the Tashahhud while Abu Bakr was silent. `Umar said, "I wish that Allah's Apostle had outlived all of us, i.e., had been the last (to die). But if Muhammad is dead, Allah nevertheless has kept the light amongst you from which you can receive the same guidance as Allah guided Muhammad with that. And Abu Bakr is the companion of Allah's Apostle He is the second of the two in the cave. He is the most entitled person among the Muslims to manage your affairs. Therefore get up and swear allegiance to him." Some people had already taken the oath of allegiance to him in the shed of Bani Sa`ida but the oath of allegiance taken by the public was taken at the pulpit. I heard `Umar saying to Abu Bakr on that day. "Please ascend the pulpit," and kept on urging him till he ascended the pulpit whereupon, all the people swore allegiance to him.