Narrated Amr bin Shuaib: on his father's authority, told that his grandfather reported the Prophet ﷺ said: A slave who has entered into an agreement to purchase his freedom is a slave as long as a dirham of the agreed price remains to be paid.
Related hadith on this topic
Explanation & Benefits
Shaykh Safi ur-Rahman Mubarakpuri
Takhrij:
«أخرجه أبوداود، العتق، باب في المكاتب يؤدي بعض كتابته فيعجز أو يموت، حديث:3926، وأصله أخرجه أبوداود، العتق، حديث:3927، والترمذي، البيوع، حديث:1260، وابن ماجه، العتق، حديث:2519، وأحمد:2 /178، 184،206، 209، وهو حديث حسن.»©Explanation:
The summary of this hadith is that a "mukatab" (a slave who has a contract of manumission) remains a slave until he pays the agreed-upon amount in full, and the owner may continue to take service from him. This is the position of the majority of scholars.
Source: Bulugh al-Maram: Commentary by Safiur Rahman Mubarakpuri, Page: 1230