Man Lā Yaḥḍuruh al-Faqīh

Hadith 72
slavery-captives
3492 - وَ رُوِيَ عَنِ اَلْقَاسِمِ بْنِ سُلَيْمَانَ عَنْ أَبِي عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ : "أَنَّ عَلِيّاً عَلَيْهِ اَلسَّلاَمُ كَانَ يَسْتَسْعِي اَلْمُكَاتَبَ لِأَنَّهُمْ لَمْ يَكُونُوا يَشْتَرِطُونَ إِنْ عَجَزَ فَهُوَ رِقٌّ " وَ قَالَ أَبُو عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ "لَهُمْ شُرُوطُهُمْ " وَ قَالَ عَلَيْهِ اَلسَّلاَمُ "يُنْتَظَرُ بِالْمُكَاتَبِ ثَلاَثَةَ أَنْجُمٍ فَإِنْ هُوَ عَجَزَ رُدَّ رَقِيقاً".
Hadith.3492 - It is narrated from Al-Qasim ibn Sulayman, from Abu Abdullah (as): Imam Ali ibn Abi Talib (as) used to allow a mukatab (a slave under a contract of emancipation) to continue working to pay off his contract, because at that time they did not stipulate that if he failed, he would return to slavery. Abu Abdullah (as), said: "They are bound by their conditions." Imam (as) also said: "A mukatab is given a period of three installments. If he fails to make the payments, he is returned to slavery."
Source: Shaykh Muḥammad b. ʿAlī al-Ṣaduq