Musnad Abu Ya'la al-Mawsili 42:162

Bishr ibn al-Walid narrated to us, Muslim ibn Khalid al-Zanji narrated to us, from Ibn Abi Najih, from Mujahid, from Qaza'ah, from Abu Sa'id, who said: Al-'Azl (coitus interruptus) was mentioned in the presence of the Prophet, may Allah bless him and grant him peace. He said: "Do you do it?" And he did not say: "Do not do it." "There is no soul that Allah creates except that Allah is its Creator."