وَعَنْ سَعْدِ بْنِ أَبِي وَقَّاصٍ: أَنَّ رَجُلًا جَاءَ إِلَى رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَقَالَ: إِنِّي أعزل عَن امْرَأَتي. فَقَالَ لَهُ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسلم: «لم تفعل ذَلِك؟» فَقَالَ الرَّجُلُ: أَشْفِقُ عَلَى وَلَدِهَا. فَقَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «لَوْ كَانَ ذَلِكَ ضاراً ضرّ فَارس وَالروم» . رَوَاهُ مُسلم

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.