Musnad Abu Ya'la al-Mawsili 42:257

Zuhayr narrated to us, Wahb ibn Jarir narrated to us, my father narrated to us, he said: I heard Yunus narrating from al-Zuhri, from Abdullah ibn Muhayriz, from Abu Sa’id, who said: A man from the Ansar asked the Messenger of Allah, may Allah bless him and grant him peace, about *al-‘azl* (coitus interruptus). The Messenger of Allah, may Allah bless him and grant him peace, said: "It does not matter if you do not do it, for there is no soul that Allah has decreed to come forth but it will come forth."