Ubayy b. Ka'b reported that he was sitting in a mosque that a person entered it and he observed prayer, and made recitation, the rest of the hadith is the same.

The Messenger of Allah (saws) came and saw that the doors of the houses of his Companions were facing the mosque. He said: Turn the direction of the houses from the mosque. The Prophet (saws) then entered (the houses or the mosque), and the people did take any step in this regard hoping that some concession might be revealed. He the Prophet) again came upon them and said: Turn the direction of these (doors) from the mosque I do not make the mosque lawful for a menstruating woman and for a person who is sexually defiled.

Abu Dawud said: Aflat b. Khalifah is also called Fulait al-'Amiri.

[At-Tirmidhi] [An-Nasai]

That the Messenger of Allah (saws) said: "When you see someone selling or buying in the Masjid then say: 'May Allah not profit your business.' And when you see someone announcing about something lost then say: 'May Allah not return it to you.'"

The Hadith of Abu Hurairah is Hasan Gharib. This is acted upon according to some of the people of knowledge. They dislike selling and buying in the Masjid. This is the view of Ahmad and Ishaq. Some of the people of knowledge permitted selling and buying in the Masjid.

Ibn `Umar never offered the Duha prayer except on two occasions: (1) Whenever he reached Mecca; and he always used to reach Mecca in the forenoon. He would perform Tawaf round the Ka`ba and then offer two rak`at at the rear of Maqam Ibrahim. (2) Whenever he visited Quba, for he used to visit it every Saturday. When he entered the Mosque, he disliked to leave it without offering a prayer. Ibn `Umar narrated that Allah's Apostle used to visit the Mosque of Quba (sometime) walking and (sometime) riding. And he (i.e. Ibn `Umar) used to say, "I do only what my companions used to do and I don't forbid anybody to pray at any time during the day or night except that one should not intend to pray at sunrise or sunset."

We were with Allah's Apostle when the sun eclipsed. Allah's Apostle stood up dragging his cloak till he entered the Mosque. He led us in a two-rak`at prayer till the sun (eclipse) had cleared. Then the Prophet (p.b.u.h) said, "The sun and the moon do not eclipse because of someone's death. So whenever you see these eclipses pray and invoke (Allah) till the eclipse is over."

Abu Dawud and others have said: When a she-camel enters fourth year, the female is called hiqqah, and the male is called hiqq, for it deserves that it should be loaded and ridden. When a camel enters its fifth year, the male is called Jadha' and the female is called Jadha'ah. When it enters its sixth year, and sheds its front teeth, it is called thani (male) and thaniyyah (female). When it enters its seventh year, it is called raba' and raba'iyyah. When it enters its ninth year and cuts its canine teeth, it is called bazil. When it enters its tenth year, it is called mukhlif. Then there is no name for it, but is called bazil'am and bazil'amain, and mukhlif'am and mukhlif'amain, upto any year it increases. Nad d. Shumail said: Bint makhad is a she-camel of one year, and bin labun is s she-camel of two years, hiqqah is a she-camel of three years, jadha'ah is a she-camel of four years, thani is a camel of five years, raba' is a camel of six years, sadis is a camel of seven years, and bazil is a camel of eight years.

Abu Dawud said: Abu Hatim and al-Asma'i said: Al-Jadhu'ah is a time when no tooth is growing. Abu Hatim said: Some of them said: When it sheds its teeth between front and canine teeth, it is called raba' and when it sheds its front teeth, it is called thani. Abu 'Ubaid said: When it becomes pregnant, it is called khalifah, and it remains khalifah for ten months; when it reaches ten months, it is called 'ushara', Abu Hatim said: When it shed its front teeth, it is called thani and when it sheds its teeth between front and canine teeth it is called raba'.

Yahya related to me from Malik from Nafi that Abdullah ibn Umar prepared the body of one of Said ibn Zayd's sons for burial and carried it and then entered the mosque and prayed without doing wudu.

Yahya said that Malik was asked whether it was necessary to do wudu because of regurgitating undigested food and he said, "No, wudu is not necessary, but the mouth should be rinsed."

AbuNadrah reported: An old man of Tufawah said to me: I was a guest of AbuHurayrah at Medina. I did not find any one of the companions of the Prophet (saws) more devoted to worship and more hospitable than AbuHurayrah.

One day I was with him when he was sitting on his bed. He had a purse which contained pebbles or kernels. A black slave-girl of his was sitting below. Counting them he was glorifying Allah. When the pebbles or the kernels in the purse were finished, she gathered them and put them again in the purse, and gave it to him. He said: Should I not tell you about me and about the Messenger of Allah (saws)?

I said: Yes. He said: Once when I was laid up with fever in the mosque, the Messenger of Allah (saws) came and entered the mosque, and said: Who saw the youth of ad-Daws. He said this three times.

A man said: Messenger of Allah, there he is, laid up with fever on one side of the mosque. He moved, walking forward till he reached me. He placed his hand on me. He had a kind talk with me, and I rose. He then began to walk till he reached the place where he used to offer his prayer. He paid his attention to the people. There were two rows of men and one row of women, or two rows of women and one row of men (the narrator is doubtful).

He then said: If Satan makes me forget anything during the prayer, the men should glorify Allah, and the women should clap their hands. The Messenger of Allah (saws) then prayed and he did not forget anything during the prayer.

He said: Be seated in your places, be seated in your places. The narrator, Musa, added the word "here". He then praised Allah and exalted Him, and said: Now to our topic.

The agreed version begins: He then said: Is there any man among you who approaches his wife, closes the door, covers himself with a curtain, and he is concealed with the curtain of Allah?

They replied: Yes. He said: later he sits and says: I did so-and-so; I did so-and-so. The people kept silence. He then turned to the women and said (to them): Is there any woman among you who narrates it? They kept silence. Then a girl fell on one of her knees. The narrator, Mu'ammil, said in his version: a buxom girl. She raised her head before the Messenger of Allah (saws) so that he could see her and listen to her.

She said: Messenger of Allah, they (the men) describe the secrets (of intercourse) ...

When Abu Dhar received the news of the Advent of the Prophet he said to his brother, "Ride to this valley (of Mecca) and try to find out the truth of the person who claims to be a prophet who is informed of the news of Heaven. Listen to what he says and come back to me." So his brother set out and came to the Prophet and listened to some of his talks, and returned to Abu Dhar and said to him. "I have seen him enjoining virtuous behavior and saying something that is not poetry." Abu Dhar said, "You have not satisfied me as to what I wanted." He then took his journey-food and carried a waterskin of his, containing some water till be reached Mecca. He went to the Mosque and searched for the Prophet and though he did not know him, he hated to ask anybody about him. When a part of the night had passed away, `Ali saw him and knew that he was a stranger. So when Abu Dhar saw `Ali, he followed him, and none of them asked his companion about anything, and when it was dawn, Abu Dhar took his journey food and his water-skin to the Mosque and stayed there all the day long without being perceived by the Prophet, and when it was evening, he came back to his retiring place. `Ali passed by him and said, "Has the man not known his dwelling place yet?" So `Ali awakened him and took him with him and none of them spoke to the other about anything. When it was the third day. `Ali did the same and Abu Dhar stayed with him. Then `Ali said "Will you tell me what has brought you here?" Abu Dhar said, "If you give me a firm promise that you will guide me, then I will tell you." `Ali promised him, and he informed `Ali about the matter. `Ali said, "It is true, and he is the Apostle of Allah. Next morning when you get up, accompany me, and if I see any danger for you, I will stop as if to pass water, but if I go on, follow me and enter the place which I will enter." Abu Dhar did so, and followed `Ali till he entered the place of the Prophet, and Abu Dhar went in with him, Abu Dhar listened to some of the Prophet's talks and embraced Islam on the spot. The Prophet said to him, "Go back to your people and inform them (about it) till you receive my order." Abu Dhar said, "By Him in Whose Hand my life is, I will proclaim my conversion loudly amongst them (i.e. the pagans)." So he went out, and when he reached the Mosque, he said as loudly as possible, "I bear witness that None has the right to be worshipped except Allah, and Muhammad is ...

I said to the Messenger of Allah: I have a place in the desert where I live and in which I pray, with the praise of Allah; but give me command about a night when I come to this mosque.

He replied: Come on the twenty third night.

I (a sub-narrator, Muhammad ibn Ibrahim) said to his (Abdullah ibn Unays's) son: How would your father act?

He replied: He used to enter the mosque when he had offered the afternoon prayer, and did not leave it for any purpose till he prayed the morning prayer. Then when he had prayed the morning prayer, he found his riding beast at the door of the mosque, mounted it and got back to his desert.

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.

A desert Arab came and making his camel kneel and tethering it, entered the mosque and prayed behind the Messenger of Allah (saws). When The Messenger of Allah (saws) had given the salutation, he went to his riding beast and, after untethering and riding it, he called out: O Allah, show mercy to me and to Muhammad and associate no one else in Thy mercy to us. The Messenger of Allah (saws) then said: Do you think that he or his camel is farther astray? Did you not listen to what he said? They replied: Certainly.

Yahya related to me from Malik that he heard that the Messenger of Allah, may Allah bless him and grant him peace, entered the mosque and found Abu Bakr as-Siddiq and Umar ibn al-Khattab there. He questioned them and they said, "Hunger has driven us out." The Messenger of Allah, may Allah bless him and grant him peace, said, "And hunger has brought me out." They went to Abu'l-Haytham ibn at- Tayyihan al-Ansari. He ordered that some barley that was in the house be prepared and he got up to slaughter a sheep for them. The Messenger of Allah, may Allah bless him and grant him peace, said, "Leave the one with milk." He slaughtered a sheep for them and brought them sweet water and it was hung on a palm-tree. Then they were brought the food and ate it and drank the water. The Messenger of Allah, may Allah bless him and grant him peace, recited, "Then, on that day, you will be asked concerning pleasure." (Sura 102 ayat 8).

Whenever the Prophet went to the lavatory, he used to say: "Allahumma inni a`udhu bika min al-khubuthi wal khaba'ith."

Yahya related to me from Malik that Yahya ibn Said said, "A Bedouin came into the mosque and uncovered his private parts to urinate. The people called out to him and began to raise their voices but the Messenger of Allah, may Allah bless him and grant him peace, said ,'Let him be. 'So they let him be and he urinated. Then the Messenger of Allah, may Allah bless him and grant him peace, ordered a bucketful of water to be brought and it was poured on the place."

Umarah ibn Ghurab said that his paternal aunt narrated to him that she asked Aisha: What if one of us menstruates and she and her husband have no bed except one? She replied: I relate to you what the Messenger of Allah (saws) had done.

One night he entered (upon me) while I was menstruating. He went to the place of his prayer, that is, to the place of prayer reserved (for this purpose) in his house. He did not return until I felt asleep heavily, and he felt pain from cold. And he said: Come near me. I said: I am menstruating. He said: Uncover your thighs. I, therefore, uncovered both of my thighs. Then he put his cheek and chest on my thighs and I lent upon he until he became warm and slept.

The Prophet entered the Mosque, and I too went there after tying the camel at the pavement of the Mosque. I said (to the Prophet ), "This is your camel." He came out and started examining the camel and said, "Both the camel and its price are for you."

I used to play with the dolls in the presence of the Prophet, and my girl friends also used to play with me. When Allah's Apostle used to enter (my dwelling place) they used to hide themselves, but the Prophet would call them to join and play with me. (The playing with the dolls and similar images is forbidden, but it was allowed for `Aisha at that time, as she was a little girl, not yet reached the age of puberty.) (Fath-ul-Bari page 143, Vol.13)

Yahya related to me from Malik from Ibn Shihab that Abu Umama ibn Sahl ibn Hunayf said, "Zayd ibn Thabit entered the mosque and found the people in ruku, so he went into ruku and then moved slowly forward until he reached the row."