Yahya ibn Sa'id narrated that Abu Nahshal ibn Aswad said to Qasim ibn Muhammad: I saw my slave-girl naked in the moonlight, so I lifted her legs and prepared for intercourse. She said: I am menstruating. So I stood up. Now, may I give this slave-girl as a gift to my son so that he may have intercourse with her? Qasim ibn Muhammad forbade it.
Hadith Referenceموطا امام مالك رواية يحييٰ / كتاب النكاح / 1111