Umm al-Fadl stated that God’s Prophet said, “Being suckled once or twice does not make marriage unlawful.” In ‘A’isha’s version he said, “One or two sucks do not make marriage unlawful.” In another by Umm al-Fadl he said, “One suckling or two does not make marriage unlawful.” These are versions by Muslim.

‘A’isha said that in what was sent down in the Qur’an ten known sucklings made marriage unlawful, but they were abrogated by five known ones, and when God’s Messenger died these words were among what was recited in the Qur’an. Muslim transmitted it.

‘Uqba b. al-Harith said he married a daughter of Ihab b. 'Aziz and a woman came and said she had suckled 'Uqba and the woman whom he had married, to which he replied, “I am not aware that you suckled me, and you did not inform me.” So he sent to the family of Abu Ihab and asked them, and when they told him that they did not know whether she had suckled their daughter he rode to the Prophet (ﷺ) in Medina and asked him. God’s Messenger said, “How can you hesitate when you have been told?” ‘Uqba therefore separated from her and she married another husband. Bukhari transmitted it.

Abu Huraira said that God’s Messenger forbade that a woman should be married to one who had married her paternal aunt, or a paternal aunt to one who had married her brother’s daughter, or a woman to one who had married her maternal aunt, or a maternal aunt to one who had married her sister's daughter. A younger sister must not be married to one who has married an elder sister, nor an elder sister to one who has married a younger sister. Tirmidhi, Abu Dawud, Darimi and Nasa’i transmitted it, Nasa’i’s version ending with “her sister’s daughter.”

Al-Bara’ b. ‘Azib said: My maternal uncle Abu Burda b. Niyar passed me carrying a standard, and I asked him where he was going. He replied, “The Prophet (ﷺ) has sent me to bring him the head of a man who has married his father’s wife.” A version by Abu Dawud, Nasa’i, Ibn Majah and Darimi has, “He has ordered me to cut off his head and take his property.” This version has “my paternal uncle” instead of “my maternal uncle.” Tirmidhi and Abu Dawud transmitted it.

Umm Salama reported God’s Messenger as saying, “The only suckling which makes marriage unlawful is that which is taken from, the breast and enters the bowels, and is taken before the time of weaning.” Tirmidhi transmitted it.

Hajjaj b. Hajjaj al-Aslami quoted his father as saying, “Messenger of God, what will remove from me the obligation due for fostering a child.”* He replied, “A slave or a slave-girl of good quality.” *It is said that Arabs liked to give a woman who had fostered a child something over and above the hire. This tradition deals with the amount to be considered full compensation for services rendered. Tirmidhi, Abu Dawud, Nasa’i and Darimi transmitted it.

Abut Tufail al-Ghanawi said: When I was sitting with the Prophet (ﷺ) a woman came forward and the Prophet (ﷺ) spread out his cloak and she sat on it. Then when she went away someone said that this woman had suckled the Prophet. Abu Dawud transmitted it.

Ibn ‘Umar told that Ghailan b. Salama ath-Thaqafi accepted Islam and that he had had ten wives in the pre-Islamic period who accepted Islam along with him; so the Prophet (ﷺ) told him to keep four and separate from the rest of them. Ahmad, Tirmidhi and Ibn Majah transmitted it.

Ad-Dahhak b. Fairuz ad-Dailamli told on his father’s authority that he had said, "Messenger of God, I have accepted Islam and I am married to two sisters." He replied, “Choose whichever of them you wish.” Tirmidhi, Abu Dawud and Ibn Majah transmitted it.

In Sharh as-sunna it is related that the Prophet (ﷺ) restored a number of women to their husbands by the first marriage when they had both accepted Islam after the change of religion and dwelling. Among them was the daughter of al-Walid b. Mughira, the wife of Safwan b. Umayya. She accepted Islam on the day of the Conquest, but her husband fled from Islam. Then his cousin Wahb b. ‘Umair was sent to him with God’s Messenger’s cloak as a guarantee of security to Safwan, and when he came God’s Messenger granted him a respite of four months before accepting Islam, so she stayed with him. Umm Hakim daughter of al-Harith b. Hisham, the wife of Ikrima b. Abu Jahl, accepted Islam in Mecca on the day of the Conquest, but her husband fled from Islam and went to the Yemen. Umm Hakim journeyed and came to him in the Yemen, and when she invited him to accept Islam he did so, and they remained married. Malik transmitted it in mursal form on the authority of Ibn Shihab.

‘Amr b. Shu’aib, on his father’s authority, said that his grandfather reported God’s Messenger as saying, “If any man marries a woman and cohabits with her it is not lawful for him to marry her daughter, but if he does not cohabit with her he may marry her daughter; and if any man marries a woman it is not lawful of him to marry her mother whether he has cohabited with her or not.” Tirmidhi transmitted it, saying this is a tradition which is not sound, with respect to its isnad. It is transmitted only by Ibn Lahi'a and al-Muthanna b. as-Sabbah on the authority of ‘Amr b. Shu’aib, and they are both declared to be weak in tradition.

He told of a man who went to God's Messenger and said, “I have a slave-girl who is our servant and I have intercourse with her, but do not want her to conceive.” He replied, “Withdraw your penis from her if you wish, for what is decreed for her will come to her.” After a time the man came and told him the girl had become pregnant, and he said, “I told you that what was decreed for her would come to her.” Muslim transmitted it.

He said that when God’s Messenger was asked about withdrawing the penis he replied, “The child does not come from all the liquid, and when God intends to create anything nothing can prevent Him.” Muslim transmitted it.

Sa'd b. Abu Waqqas told of a man who came to God's Messenger and said that he withdrew his penis from his wife. He asked him why he did that and the man replied that he feared for her child, so God’s Messenger said, “If that were injurious it would injure the Persians and the Greeks.”* * This is explained as referring to a woman who is suckling a child, and the fear that the child, would be injured if she became pregnant. Muslim transmitted it.

Abu Sa'id al-Khudri reported God's Messenger as saying, “The most serious breach of trust in God’s sight on the day of resurrection ...” A version has, “Among those who will have the worst position in God’s sight on the day of resurrection is the man who has intercourse with his wife, and she with him, and then spreads her secret.”* * i.e. talks about the subject to others, or tells people about defects or beauties he has found in her. Muslim transmitted it.

Khuzaima b. Thabit reported the Prophet (ﷺ) as saying, “God is not ashamed of the truth. Do not have intercourse with women through the anus.” Ahmad, Tirmidhi, Ibn Majah and Darimi transmitted it.

Abu Huraira reported God’s Messenger as saying, “He who has intercourse with his wife through her anus is accursed.” Ahmad and Abu Dawud transmitted it.

He reported God’s Messenger as saying, “God will not look at him who has intercourse with his wife through her anus.” It is transmitted in Sharh as-sunna.

Ibn ‘Abbas reported God’s Messenger as saying, “God will not look at a man who has intercourse with a man or a woman through the anus.” Tirmidhi transmitted it.