ʿĀṣim b. Yūsuf > Abū Isḥāq al-Fazārī > Yūnus b. ʿUbayd > al-Ḥasan > al-Aswad b. Sarīʿ

"We went out with the Messenger of Allah ﷺ on expeditions and defeated the polytheists. The people were quick to kill until they killed the young. When the Prophet ﷺ came to know about this, he said, 'What is the matter with people that they killed the young? Verily, the killing of young children should not be done, not even three of them.'" – Sound Chain

أَخْبَرَنَا عَاصِمُ بْنُ يُوسُفَ حَدَّثَنَا أَبُو إِسْحَاقَ الْفَزَارِيُّ عَنْ يُونُسَ بْنِ عُبَيْدٍ عَنْ الْحَسَنِ عَنْ الْأَسْوَدِ بْنِ سَرِيعٍ قَالَ

خَرَجْنَا مَعَ رَسُولِ اللَّهِ ﷺ فِي غَزَاةٍ فَظَفِرَنَا بِالْمُشْرِكِينَ فَأَسْرَعَ النَّاسُ فِي الْقَتْلِ حَتَّى قَتَلُوا الذُّرِّيَّةَ فَبَلَغَ ذَلِكَ النَّبِيَّ ﷺ فَقَالَ «مَا بَالُ أَقْوَامٍ ذَهَبَ بِهُمُ الْقَتْلُ حَتَّى قَتَلُوا الذُّرِّيَّةَ؟ أَلَا لَا تُقْتَلَنَّ ذُرِّيَّةٌ ثَلَاثًا» – إسناده صحيح