Musannaf Ibn Abi Shaybah

Hasan (may Allah have mercy on him) used to say that if a person has a slave woman in his marriage and he performs ila’ (oath of abstinence) from her, then after two months have passed, the ila’ will take effect.

Ibrahim (may Allah have mercy on him) said that the period of Ila for a slave woman is two months.

Hazrat Sha'bi (may Allah have mercy on him) says that the ila' (oath of abstinence) of a slave-girl is like the ila' of a free woman.

It is also narrated similarly from Ibrahim, may Allah have mercy on him.

Hazrat Dahhak (may Allah have mercy on him) says that if a free man makes ila’ (oath of abstinence) from a slave woman or divorces her, then her waiting period (‘iddah) is half of the waiting period of a free woman.

Hazrat Sha’bah (may Allah have mercy on him) says that I asked Hazrat Hakam (may Allah have mercy on him) what is the ruling if a person makes ila’ (oath of abstinence) from his slave woman? He replied that Ibrahim (may Allah have mercy on him) used to say that her waiting period (‘iddah) is two months. And I asked Hazrat Hammad (may Allah have mercy on him) about this matter, and he also said the same.