Allah's Apostle wrote to Caesar and invited him to Islam and sent him his letter with Dihya Al-Kalbi whom Allah's Apostle ordered to hand it over to the Governor of Busra who would forward it to Caesar. Caesar as a sign of gratitude to Allah, had walked from Hims to Ilya (i.e. Jerusalem) when Allah had granted Him victory over the Persian forces. So, when the letter of Allah's Apostle reached Caesar, he said after reading it, 'Seek for me any one of his people! (Arabs of Quraish tribe) if present here, in order to ask him about Allah's Apostle. At that time Abu Sufyan bin Harb was in Sham with some men from Quraish who had come (to Sham) as merchants during the truce that had been concluded between Allah's Apostle; and the infidels of Quraish. Abu Sufyan said, Caesar's messenger found us somewhere in Sham so he took me and my companions to Ilya and we were admitted into Ceasar's court to find him sitting in his royal court wearing a crown and surrounded by the senior dignitaries of the Byzantine. He said to his translator. 'Ask them who amongst them is a close relation to the man who claims to be a prophet." Abu Sufyan added, "I replied, 'I am the nearest relative to him.' He asked, 'What degree of relationship do you have with him?' I replied, 'He is my cousin,' and there was none of Bani Abu Manaf in the caravan except myself. Caesar said, 'Let him come nearer.' He then ordered that my companions stand behind me near my shoulder and said to his translator, 'Tell his companions that I am going to ask this man about the man who claims to be a prophet. If he tells a lie, they should contradict him immediately." Abu Sufyan added, "By Allah! Had it not been shameful that my companions label me a liar, I would not have spoken the truth about him when he asked me. But I considered it shameful to be called a liar by my companions. So I told the truth. He then said to his translator, 'Ask him what kind of family does he belong to.' I replied, 'He belongs to a noble family amongst us.' He said, 'Have anybody else amongst you ever claimed the same before him? 'I replied, 'No.' He said, 'Had you ever blamed him for telling lies before he claimed what he claimed? ' I replied, 'No.' He said, 'Was anybody amongst his ancestors a king?' I replied, 'No.' He said, "Do the noble or the poor follow him?' I replied, 'It is the poor who follow him.' He said, 'Are they increasing or decreasing (day by day)?' I replied,' They are increasing.' He said, 'Does anybody amongst those who embrace his (the Prophet's) Religion become displeased and then discard his Religion?'. I replied, 'No. ' He said, 'Does he break his promises? I replied, 'No, but we are now at truce with him and we are afraid that he may betray us." Abu Sufyan added, "Other than the last sentence, I could not say anything against him. Caesar then asked, 'Have you ever had a war with him?' I replied, 'Yes.' He said, 'What was the outcome of your battles with him?' I replied, 'The result was unstable; sometimes he was victorious and sometimes we.' He said, 'What does he order you to do?' I said, 'He tells us to worship Allah alone, and not to worship others along with Him, and to leave all that our fore-fathers used to worship. He orders us to pray, give in charity, be chaste, keep promises and return what is entrusted to us.' When I had said that, Caesar said to his translator, 'Say to him: I ask you about his lineage and your reply was that he belonged to a noble family. In fact, all the apostles came from the noblest lineage of their nations. Then I questioned you whether anybody else amongst you had claimed such a thing, and your reply was in the negative. If the answer had been in the affirmative, I would have thought that this man was following a claim that had been said before him. When I asked you whether he was ever blamed for telling lies, your reply was in the negative, so I took it for granted that a person who did not tell a lie about (others) the people could never tell a lie about Allah. Then I asked you whether any of his ancestors was a king. Your reply was in the negative, and if it had been in the affirmative, I would have thought that this man wanted to take back his ancestral kingdom. When I asked you whether the rich or the poor people followed him, you replied that it was the poor who followed him. In fact, such are the followers of the apostles. Then I asked you whether his followers were increasing or decreasing. You replied that they were increasing. In fact, this is the result of true faith till it is complete (in all respects). I asked you whether there was anybody who, after embracing his religion, became displeased and discarded his religion; your reply was in the negative. In fact, this is the sign of true faith, for when its cheerfulness enters and mixes in the hearts completely, nobody will be displeased with it. I asked you whether he had ever broken his promise. You replied in the negative. And such are the apostles; they never break their promises. When I asked you whether you fought with him and he fought with you, you replied that he did, and that sometimes he was victorious and sometimes you. Indeed, such are the apostles; they are put to trials and the final victory is always theirs. Then I asked you what he ordered you. You replied that he ordered you to worship Allah alone and not to worship others along with Him, to leave all that your fore-fathers used to worship, to offer prayers, to speak the truth, to be chaste, to keep promises, and to return what is entrusted to you. These are really the qualities of a prophet who, I knew (from the previous Scriptures) would appear, but I did not know that he would be from amongst you. If what you say should be true, he will very soon occupy the earth under my feet, and if I knew that I would reach him definitely, I would go immediately to meet Him; and were I with him, then I would certainly wash his feet.' " Abu Sufyan added, "Caesar then asked for the letter of Allah's Apostle and it was read. Its contents were: "In the name of Allah, the most Beneficent, the most Merciful (This letter is) from Muhammad, the slave of Allah, and His Apostle, to Heraculius, the Ruler of the Byzantine. Peace be upon the followers of guidance. Now then, I invite you to Islam (i.e. surrender to Allah), embrace Islam and you will be safe; embrace Islam and Allah will bestow on you a double reward. But if you reject this invitation of Islam, you shall be responsible for misguiding the tillers (i.e. your nation). O people of the Scriptures! Come to a word common to you and us and you, that we worship. None but Allah, and that we associate nothing in worship with Him; and that none of us shall take others as Lords besides Allah. Then if they turn away, say: Bear witness that we are (they who have surrendered (unto Him)..(3.64) Abu Sufyan added, "When Heraclius had finished his speech, there was a great hue and cry caused by the Byzantine Royalties surrounding him, and there was so much noise that I did not understand what they said. So, we were turned out of the court. When I went out with my companions and we were alone, I said to them, 'Verily, Ibn Abi Kabsha's (i.e. the Prophet's) affair has gained power. This is the King of Bani Al-Asfar fearing him." Abu Sufyan added, "By Allah, I remained low and was sure that his religion would be victorious till Allah converted me to Islam, though I disliked it."

Yahya related to me from Malik from Hisham ibn Urwa from his father that A'isha, the wife of the Prophet, may Allah bless him and grant him peace, said, "The day of Ashura was a day the Quraysh used to fast in the jahiliyya, and the Messenger of Allah, may Allah bless him and grant him peace, used also to fast it during the jahiliyya. Then when the Messenger of Allah, may Allah bless him and grant him peace, came to Madina he fasted it and ordered that it be fasted. Then Ramadan was made obligatory, and that became the fard instead of Ashura, but whoever wanted to, fasted it, and whoever did not want to, did not fast it."

The Prophet (saws) said: Disagreement will occur at the death of a caliph and a man of the people of Medina will come flying forth to Mecca. Some of the people of Mecca will come to him, bring him out against his will and swear allegiance to him between the Corner and the Maqam. An expeditionary force will then be sent against him from Syria but will be swallowed up in the desert between Mecca and Medina. When the people see that, the eminent saints of Syria and the best people of Iraq will come to him and swear allegiance to him between the Corner and the Maqam.

Then there will arise a man of Quraysh whose maternal uncles belong to Kalb and send against them an expeditionary force which will be overcome by them, and that is the expedition of Kalb. Disappointed will be the one who does not receive the booty of Kalb. He will divide the property, and will govern the people by the Sunnah of their Prophet (saws) and establish Islam on Earth. He will remain seven years, then die, and the Muslims will pray over him.

Abu Dawud said: Some transmitted from Hisham "nine years" and some "seven years".

Yahya related to me from Malik from Muhammad ibn Abi Bakr ibn Muhammad ibn Amribn Hazm that Abdar-Rahman ibn Hanthala az-Zurqi was informed by a mawla of Quraysh,who used to be known as Ibn Mursi, that he was sitting with Umar ibn al-Khattab, and when they had prayed dhuhr, he said, "Yarfa! Bring that letter! (a letter which he had written about the paternal aunt.) We asked about her and asked for information about her." Yarfa brought it to him. He called for a small vessel or a drinking-bowl in which there was water. He erased the letter in it. Then he said, "Had Allah approved of you as an heir, we would have confirmed you. Had Allah approved of you, we would have confirmed you."

Bakkar ibn Yahya said that his grandmother narrated to him: I entered upon Umm Salamah. A woman from the Quraysh asked her about praying with the clothes which a woman wore while she menstruated.

Umm Salamah said: We would menstruate in the lifetime of the Messenger of Allah (saws). Then each one of us refrained (from prayer) during menstrual period. When she was purified, she would look at the clothe in which she menstruated. If it were smeared with blood, we would wash it and pray with it; if there were nothing in it, we would leave it and that would not prevent us from praying with it (the same clothe).

As regards the woman who had plaited hair - sometimes each of us had plaited hair - when she washed, she would not undo the hair. She would instead pour three handfuls of water upon her head. When she felt moisture in the roots of her hair, she would rub them. Then she would pour water upon her whole body.

When Allah's Apostle set out (towards Mecca) during the year of the Conquest (of Mecca) and this news reached (the infidels of Quraish), Abu Sufyan, Hakim bin Hizam and Budail bin Warqa came out to gather information about Allah's Apostle , They proceeded on their way till they reached a place called Marr-az-Zahran (which is near Mecca). Behold! There they saw many fires as if they were the fires of `Arafat. Abu Sufyan said, "What is this? It looked like the fires of `Arafat." Budail bin Warqa' said, "Banu `Amr are less in number than that." Some of the guards of Allah's Apostle saw them and took them over, caught them and brought them to Allah's Apostle. Abu Sufyan embraced Islam. When the Prophet proceeded, he said to Al-Abbas, "Keep Abu Sufyan standing at the top of the mountain so that he would look at the Muslims. So Al-`Abbas kept him standing (at that place) and the tribes with the Prophet started passing in front of Abu Sufyan in military batches. A batch passed and Abu Sufyan said, "O `Abbas Who are these?" `Abbas said, "They are (Banu) Ghifar." Abu Sufyan said, I have got nothing to do with Ghifar." Then (a batch of the tribe of) Juhaina passed by and he said similarly as above. Then (a batch of the tribe of) Sa`d bin Huzaim passed by and he said similarly as above. then (Banu) Sulaim passed by and he said similarly as above. Then came a batch, the like of which Abu Sufyan had not seen. He said, "Who are these?" `Abbas said, "They are the Ansar headed by Sa`d bin Ubada, the one holding the flag." Sa`d bin Ubada said, "O Abu Sufyan! Today is the day of a great battle and today (what is prohibited in) the Ka`ba will be permissible." Abu Sufyan said., "O `Abbas! How excellent the day of destruction is! "Then came another batch (of warriors) which was the smallest of all the batches, and in it there was Allah's Apostle and his companions and the flag of the Prophet was carried by Az-Zubair bin Al Awwam. When Allah's Apostle passed by Abu Sufyan, the latter said, (to the Prophet), "Do you know what Sa`d bin 'Ubada said?" The Prophet said, "What did he say?" Abu Sufyan said, "He said so-and-so." The Prophet said, "Sa`d told a lie, but today Allah will give superiority to the Ka`ba and today the Ka`ba will be covered with a (cloth) covering." Allah's Apostle ordered that his flag be fixed at Al-Hajun. Narrated `Urwa: Nafi` bin Jubair bin Mut`im said, "I heard Al-Abbas saying to Az-Zubair bin Al- `Awwam, 'O Abu `Abdullah ! Did Allah's Apostle order you to fix the flag here?' " Allah's Apostle ordered Khalid bin Al-Walid to enter Mecca from its upper part from Ka'da while the Prophet himself entered from Kuda. Two men from the cavalry of Khalid bin Al-Wahd named Hubaish bin Al-Ash'ar and Kurz bin Jabir Al-Fihri were martyred on that day.