سنن النسائي

It was narrated from 'Abdur-Rahman bin Bishr bin Mas'ud, who attributed the Hadith to Abu Sa'eed Al-Khudri, that mention of that (coitus interruptus) was made to the Messenger of Allah (ﷺ) and he said: "Why do you do that?" We said: "A man may have a wife, and he has intercourse with her, but he does not want her to get pregnant, or he may have a concubine, and he has intercourse with her, but he does not want her to get pregnant." He said: "It does not make any difference if you do that, for it is the matter of Al-Qadr."