Sunan an-Nasa'i 3328
سنن النسائي#3328SahihIt was narrated from Abu Sa'eed Az-Zuraqi that a man asked the Messenger of Allah about coitus interruptus and said:"My wife is breast-feeding and I do not want her to get pregnant." The Prophet said: "What has been decreed in the womb will come to be
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiIsnaad Hasan
In-book reference: 26:133