Sayyiduna Abu Sa'id Khudri (may Allah be pleased with him) narrates: On the occasion of the Battle of Khaybar, we captured some prisoners and intended to take ransom for them. We asked the Prophet Muhammad (peace be upon him) about 'azl (coitus interruptus). The Prophet Muhammad (peace be upon him) said: There is no harm upon you if you do not do it, because this is according to destiny. Abu Wadaak's name is Jabr bin Nauf; this has been stated by the Shaykh.