Chapter 21: The Book of Emancipating Slaves
Abu Huraira (Allah be pleased witli him) reported Allah' s Prophet (ﷺ) as saying: If anyone emancipates a share in a slave, he is to be completely emancipated if he has money; but if he has none, the slave will be required to work to pay for his freedom, but must not be over-burhened.
Sahih Muslim 1503a