Man Lā Yaḥḍuruh al-Faqīh
Hadith 573477 - وَ سُئِلَ اَلصَّادِقُ عَلَيْهِ اَلسَّلاَمُ عَنِ اَلْمُكَاتَبِ فَقَالَ "يَجُوزُ عَلَيْهِ مَا شَرَطْتَ عَلَيْهِ ".
Hadith.3477 - Imam Jafar ibn Muhammad Al-Sadiq (as) was asked about a mukatab (a slave under a contract of emancipation).
Imam (as) said: "What you have stipulated upon him is binding."