Yahya related to me from Malik from Nafi that the slave girls ofAbdullah ibn Umar used to wash his feet and bring him a mat of palmleaves while they were menstruating.Malik was asked whethera man who had women and slavegirlscould have intercourse with all ofthem before he did ghusl. He said, "There is no harm in a man havingintercourse with two of his slave girls before he does ghusl. It isdisapproved of, however, to go to a freewoman on another's day. Thereis no harm in making love first to one slave girl and then to anotherwhen one is junub."Malik was asked about a man who was junuband water was put down for him to do ghusl with.Then he forgot and puthis finger into it to find out whether it was hot or cold. Malik said,"If no filth has soiled his fingers, I do not consider that that makesthe water impure."
USC-MSA web (English) reference: Book 2, Hadith 90
Arabic reference: Book 2, Hadith 120