Narrated Ibn Muhairiz:
I saw Abu Said and asked him about coitus interruptus. Abu Said said, "We went with Allah's Apostle, in the Ghazwa of Barli Al-Mustaliq and we captured some of the 'Arabs as captives, and the long separation from our wives was pressing us hard and we wanted to practice coitus interruptus. We asked Allah's Apostle (whether it was permissible). He said, "It is better for you not to do so. No soul, (that which Allah has) destined to exist, up to the Day of Resurrection, but will definitely come, into existence."