that she intended to buy Barira (a slave girl) and her masters stipulated that they would have her Wala'. When `Aisha mentioned that to the Prophet (ﷺ) ; he said, "Buy her, for the Wala' is for the one who manumits."
Sahih al-Bukhari Book 84, Hadith 10
← Previous Hadith Jabir said: An Ansari man made his slave a Mudabbar and he had no other property than him. When the Prophet (ﷺ) heard of that, he said (to his companions), "Who wants to buy him (i.e., the slave) for me?" Nu'aim bin An-Nahham bought him for eight hundred Dirhams. I heard Jabir saying, "That was a coptic slave who died in the same year."

Sahih al-Bukhari Book 84, Hadith 9 Next Hadith → I went to Allah's Messenger (ﷺ) along with a group of people from (the tribe of) Al-Ash`ari, asking for mounts. The Prophet (ﷺ) said, "By Allah, I will not give you anything to ride, and I have nothing to mount you on." We stayed there as long as Allah wished, and after that, some camels were brought to the Prophet and he ordered that we be given three camels. When we set out, some of us said to others, "Allah will not bless us, as we all went to Allah's Messenger (ﷺ) asking him for mounts, and although he had sworn that he would not give us mounts, he did give us." So we returned to the Prophet; and mentioned that to him. He said, "I have not provided you with mounts, but Allah has. By Allah, Allah willing, if I ever take an oath, and then see that another is better than the first, I make expiration for my (dissolved) oath, and do what is better and make expiration."

Sahih al-Bukhari Book 84, Hadith 11