Musannaf Ibn Abi Shaybah

Hazrat Abu Bakr bin Amr bin Hazm narrates that a woman gifted the right of allegiance (wala’) of her slave to him and set him free. The slave then freed himself and gifted himself to Abdur Rahman bin Amr bin Hazm. Later, the woman passed away. Her clients (mawali) brought this case before Hazrat Uthman bin Affan (may Allah be pleased with him). Hazrat Uthman (may Allah be pleased with him) asked for testimony regarding the matter, and when it was provided, Hazrat Uthman (may Allah be pleased with him) said to him, “Go and establish the bond of allegiance (wala’) with whomever you wish.” So he established the bond of allegiance with Abdur Rahman bin Amr bin Hazm.