Musnad Abu Ya'la al-Mawsili 109:194

Sufyan narrated to us, Rawh narrated to us, Ibn Jurayj narrated to us, he said: 'Ata' informed me that he heard Jabir ibn 'Abd Allah mentioning *al-'azl* (coitus interruptus), and he said: "We used to practice it during the time of the Messenger of Allah, may Allah bless him and grant him peace."