Sahih al-Bukhari 6001
Sahih al-Bukhari · Book 78: Good Manners and Form (Al-Adab) · Killing of children for the fear that they will share meals (in the book an 's' is added to shares I have omitted that 's')
Narrated `Abdullah:
حَدَّثَنَا مُحَمَّدُ بْنُ كَثِيرٍ ، أَخْبَرَنَا سُفْيَانُ ، عَنْ مَنْصُورٍ ، عَنْ أَبِي وَائِلٍ ، عَنْ عَمْرِو بْنِ شُرَحْبِيلَ ، عَنْ عَبْدِ اللَّهِ ، قَالَ قُلْتُ يَا رَسُولَ اللَّهِ أَىُّ الذَّنْبِ أَعْظَمُ قَالَ " أَنْ تَجْعَلَ لِلَّهِ نِدًّا وَهْوَ خَلَقَكَ ". ثُمَّ قَالَ أَىُّ قَالَ " أَنْ تَقْتُلَ وَلَدَكَ خَشْيَةَ أَنْ يَأْكُلَ مَعَكَ ". قَالَ ثُمَّ أَىُّ قَالَ " أَنْ تُزَانِيَ حَلِيلَةَ جَارِكَ ". وَأَنْزَلَ اللَّهُ تَصْدِيقَ قَوْلِ النَّبِيِّ صلى الله عليه وسلم {وَالَّذِينَ لاَ يَدْعُونَ مَعَ اللَّهِ إِلَهًا آخَرَ} .
I said 'O Allah's Messenger (ﷺ)! Which sin is the greatest?" He said, "To set up a rival unto Allah, though He Alone created you." I said, "What next?" He said, "To kill your son lest he should share your food with you." I further asked, "What next?" He said, "To commit illegal sexual intercourse with the wife of your neighbor." And then Allah revealed as proof of the statement of the Prophet: 'Those who invoke not with Allah any other god)................. (to end of verse)...' (25.68)