" He will be required to work (in order to secure freedom) for that por- tion in which he has not been emancipated, without overburdening him."
Sahih Muslim Book 27, Hadith 81
← Previous Hadith He who emancipates his portion in a slave, full emancipation may be secured for him out of his property (if he has money) if he has enough property to meet (the required expenses), but if he has not enough property, the slave should be put to extra labour (in order to earn money for buying his freedom), but he should not be overburdened.

Sahih Muslim Book 27, Hadith 80 Next Hadith → 'Imran b. Husain reported that a person who had no other property emancipated six slaves of his at the time of his death. Allah's Messenger (ﷺ) called for them and divided them into three sections, cast lots amongst them, and set two free and kept four in slavery; and he (the Holy Prophet) spoke severely of him.

Sahih Muslim Book 27, Hadith 82