Sulaiman bin Hayyan said:“I heard my father narrate from Abu Hurairah that the Prophet (ﷺ) said: 'Among those who came before you there was a man who bought some property and found therein a jar of gold. He said: “I bought land from you, but I did not buy the gold from you.” The man said: “Rather I sold you the land with whatever is in it.” They referred their case to (a third) man who said: “Do you have children?” One of them said: “I have a boy.” The other said: “I have a girl.” He said: “Marry the boy to the girl, and let them spend on themselves from it and give in charity.”
It was narrated that Jabir bin 'Abdullah said:“A man among us promised freedom to a slave after his death, and he did not have any property other than him (this slave). So the Prophet (ﷺ) sold him, and Ibn (Nahham), a man from Banu 'Adi, bought him.”
It was narrated that Ibn`Abbas said:“Mention was made of the mother of Ibrahim in the presence of the Messenger of Allah (ﷺ), and he said: 'Her son set her free.'”
Jabir bin `Abdullah was heard to say:“We used to sell our slave women and the mothers of our children (Umahat Awaldina) when the Prophet (ﷺ) was still living among us, and we did not see anything wrong with that.”
Abu Hurairah (ra) said that the Messenger of Allah (ﷺ) said "Three who's support is a right upon Allah:the warrior in the path of Allah, the mukatab seeking to fulfill (his manumission debt), and the one getting married seeking chastity
It was narrated from `Amr bin Shu'aib , from his father, from his grandfather that the Messenger of Allah (ﷺ) said:“Any slave who has made a contract to buy his freedom for one hundread Uqiyyah and pays it all except ten Uqiyyah; he is still a slave.” (One Uqiyyah is equal to 40 Dirham)