Narrated `Abdullah bin `Umar: We used not to call Zaid bin Haritha the freed slave of Allah's Messenger except Zaid bin Muhammad till the Qu'anic Verse was revealed: "Call them (adopted sons) by (the names of) their fathers. That is more than just in the Sight of Allah." (33.5)

Narrated Anas: My uncle Anas bin An-Nadr was absent from the Battle of Badr. He said, "O Allah's Apostle! I was absent from the first battle you fought against the pagans. (By Allah) if Allah gives me a chance to fight the pagans, no doubt. Allah will see how (bravely) I will fight." On the day of Uhud when the Muslims turned their backs and fled, he said, "O Allah! I apologize to You for what these (i.e. his companions) have done, and I denounce what these (i.e. the pagans) have done." Then he advanced and Sa`d bin Mu`adh met him. He said "O Sa`d bin Mu`adh! By the Lord of An-Nadr, Paradise! I am smelling its aroma coming from before (the mountain of) Uhud," Later on Sa`d said, "O Allah's Apostle! I cannot achieve or do what he (i.e. Anas bin An-Nadr) did. We found more than eighty wounds by swords and arrows on his body. We found him dead and his body was mutilated so badly that none except his sister could recognize him by his fingers." We used to think that the following Verse was revealed concerning him and other men of his sort: "Among the believers are men who have been true to their covenant with Allah.........." (33.23) His sister Ar-Rubbaya' broke a front tooth of a woman and Allah's Apostle ordered for retaliation. On that Anas (bin An-Nadr) said, "O Allah's Apostle! By Him Who has sent you with the Truth, my sister's tooth shall not be broken." Then the opponents of Anas's sister accepted the compensation and gave up the claim of retaliation. So Allah's Apostle said, "There are some people amongst Allah's slaves whose oaths are fulfilled by Allah when they take them."

Narrated `Aisha: (the wife of the Prophet) Abu Hudhaifa, one of those who fought the battle of Badr, with Allah's Apostle adopted Salim as his son and married his niece Hind bint Al-Wahd bin `Utba to him' and Salim was a freed slave of an Ansari woman. Allah's Apostle also adopted Zaid as his son. In the Prelslamic period of ignorance the custom was that, if one adopted a son, the people would call him by the name of the adopted-father whom he would inherit as well, till Allah revealed: "Call them (adopted sons) By (the names of) their fathers." (33.5)

Narrated `Aisha: Abu Hudhaifa bin `Utba bin Rabi`a bin `Abdi Shams who had witnessed the battle of Badr along with the Prophet adopted Salim as his son, to whom he married his niece, Hind bint Al-Walid bin `Utba bin Rabi`a; and Salim was the freed slave of an Ansar woman, just as the Prophet had adopted Zaid as his son. It was the custom in the Pre-lslamic Period that if somebody adopted a boy, the people would call him the son of the adoptive father and he would be the latter's heir. But when Allah revealed the Divine Verses: 'Call them by (the names of) their fathers . . . your freed-slaves,' (33.5) the adopted persons were called by their fathers' names. The one whose father was not known, would be regarded as a Maula and your brother in religion. Later on Sahla bint Suhail bin `Amr Al-Quraishi Al-`Amiri-- and she was the wife of Abu- Hudhaifa bin `Utba--came to the Prophet and said, "O Allah's Apostle! We used to consider Salim as our (adopted) son, and now Allah has revealed what you know (regarding adopted sons)." The sub-narrator then mentioned the rest of the narration.