Why do you practise it? They said: There is a man whose wife has to suckle the child, and if that person has a sexual intercourse with her (she may conceive) which he does not like, and there is another person who has a slave-girl and he has a sexual intercourse with her, but he does not like her to have conception so that she may not become Umm Walad, whereupon he (the Holy Prophet) said: There is no harm if you do not do that, for that (the birth of the child) is something pre- ordained. Ibn 'Aun said: I made a mention of this hadith to Hasan, and he said: By Allah, (it seems) as if there is upbraiding in it (for 'azl).
فَرَدَّ الْحَدِيثَ حَتَّى رَدَّهُ إِلَى أَبِي سَعِيدٍ الْخُدْرِيِّ قَالَ ذُكِرَ الْعَزْلُ عِنْدَ النَّبِيِّ ﷺ فَقَالَ وَمَا ذَاكُمْ قَالُوا الرَّجُلُ تَكُونُ لَهُ الْمَرْأَةُ تُرْضِعُ فَيُصِيبُ مِنْهَا وَيَكْرَهُ أَنْ تَحْمِلَ مِنْهُ وَالرَّجُلُ تَكُونُ لَهُ الأَمَةُ فَيُصِيبُ مِنْهَا وَيَكْرَهُ أَنْ تَحْمِلَ مِنْهُ قَالَ فَلاَ عَلَيْكُمْ أَنْ لاَ تَفْعَلُوا ذَاكُمْ فَإِنَّمَا هُوَ الْقَدَرُ قَالَ ابْنُ عَوْنٍ فَحَدَّثْتُ بِهِ الْحَسَنَ فَقَالَ وَاللَّهِ لَكَأَنَّ هَذَا زَجْرٌ