A man who vows to free a slave from the descendants of Ismail (peace be upon him)

Ibn Ma'qil said: Sayyidah Aishah (may Allah be pleased with her) had to free a slave from the descendants of Isma'il. Some captives came from Yemen; Mis'ar (the narrator) said: I think they were from the tribe of Khawlan. She was forbidden to free any of them. Then some captives came from Mudar; the narrator said: I think they were from Banu al-Anbar. Then he ordered her to free one of them.

Amir (al-Sha'bi) was asked about a man who vowed that if he entered the house of so-and-so he would free two slaves from the descendants of Isma'il, and then he entered his house. He said: There is no expiation for it. The man said: I cannot find the two of them. He said: Then fast four consecutive months, two months for each slave; perhaps it will be some expiation.