It is narrated from Hazrat Abu Saeed Khudri (may Allah be pleased with him) that during the expedition of Banu Mustaliq, we obtained captives. This was the same expedition in which the Prophet (peace and blessings be upon him) received Hazrat Juwayriya (may Allah be pleased with her). Some of us intended to keep these slave women in our homes, and some intended to benefit from them and then sell them. Therefore, we asked the Prophet (peace and blessings be upon him) about coitus interruptus (azl). The Prophet (peace and blessings be upon him) said: "There is no harm if you do not practice azl. Whatever Allah has decreed will surely happen."