Abu Sirma said to Abu Said al Khadri (RA) : O Abu Said, did you hear Allahs Messenger ﷺ mentioning al-azl? He said: Yes, and added: We went out with Allahs Messenger ﷺ on the expedition to the Bil-Mustaliq and took captive some excellent Arab women; and we desired them, for we were suffering from the absence of our wives, (but at the same time) we also desired ransom for them. So we decided to have sexual intercourse with them but by observing azl (Withdrawing the male sexual organ before emission of semen to avoid-conception). But we said: We are doing an act whereas Allahs Messenger is amongst us; why not ask him? So we asked Allahs Messenger ﷺ , and he said: It does not matter if you do not do it, for every soul that is to be born up to the Day of Resurrection will be born.