Muwatta Malik #1230
Divorce
The Arabic includes the chain of narration (sanad) and the collector's commentary; the English translation shows the Prophet's words only.
حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، أَنَّهُ سَأَلَ ابْنَ شِهَابٍ عَنْ إِيلاَءِ الْعَبْدِ، فَقَالَ هُوَ نَحْوُ إِيلاَءِ الْحُرِّ وَهُوَ عَلَيْهِ وَاجِبٌ وَإِيلاَءُ الْعَبْدِ شَهْرَانِ .
Yahya related to me from Malik that he had asked Ibn Shihab about
the ila of the slave. He said that it was like the ila of the free
man, and it put an obligation on him. The ila of the slave was two
months.
About Muwatta Malik
This hadith is #1230 from Muwatta Malik, in the Book of Divorce.