Mishkat al-Masabih #3060

Sa'd b. Abu Waqqas told of a man who came to God's Messenger and said that he withdrew his penis from his wife. He asked him why he did that and the man replied that he feared for her child, so God’s Messenger said, “If that were injurious it would injure the Persians and the Greeks.”* * This is explained as referring to a woman who is suckling a child, and the fear that the child, would be injured if she became pregnant. Muslim transmitted it.