Imam Maalik مالك بن أنس بن مالك بن أبي عامر · The Chapters on Manumission (of Slaves)

“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.)

that Barirah came to her when she was came to her when she was Muktabah, and her masters had written a contract of manumission for nine Uqiyyah. She (`Aishah) said: “If your masters wish I will pay them that in one sum, and the right of inheritance will belong to me.” He said: “So she went to her masters and told them about that, but they insisted that the right of inheritance should belong to them. `Aishah mentioned that to…