Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
ahmad:3264 – Sufyān > Ismāʿīl b. Umayyah > Saʿīd b. Abū Saʿīd al-Maqburī > Yazīd b. Hurmuz > Katab Najdah > Ibn ʿAbbās Yasʾaluh > Qatl al-Wildān Fakatab Ilayh Katabt Tasʾalunī

[Machine] Regarding the killing of infants, he wrote to him, "You are asking me about the killing of infants, and indeed, the Messenger of Allah ﷺ did not kill them. And you should not kill them unless you know from them what Moses' companion knew about the boy."  

أحمد:٣٢٦٤ – حَدَّثَنَا سُفْيَانُ حَدَّثَنَا إِسْمَاعِيلُ بْنُ أُمَيَّةَ عَنْ سَعِيدِ بْنِ أَبِي سَعِيدٍ الْمَقْبُرِيِّ عَنْ يَزِيدَ بْنِ هُرْمُزَ قَالَ كَتَبَ نَجْدَةُ إِلَى ابْنِ عَبَّاسٍ يَسْأَلُهُ

عَنْ قَتْلِ الْوِلْدَانِ فَكَتَبَ إِلَيْهِ كَتَبْتَ تَسْأَلُنِي عَنْ قَتْلِ الْوِلْدَانِ وَإِنَّ رَسُولَ اللهِ ﷺ لَمْ يَكُنْ يَقْتُلُهُمْ وَأَنْتَ فَلَا تَقْتُلْهُمْ إِلَّا أَنْ تَعْلَمَ مِنْهُمْ مِثْلَ مَا عَلِمَ صَاحِبُ مُوسَى مِنَ الْغُلَامِ  

See similar narrations below:

Collected by Aḥmad
ahmad:3200 – ʿAbd al-Raḥman b. Mahdī > Jarīr b. Ḥāzim > Qays b. Saʿd > Yazīd b. Hurmuz > Katab Najdah b. ʿĀmir > Ibn ʿAbbās Yasʾaluh > Ashyāʾ Fashahidt Ibn ʿAbbās Ḥīn Qaraʾ Kitābah And Ḥīn Katab Jawābah Fakatab Ilayh Innak Saʾaltanī Wadhakar al-Ḥadīth

[Machine] "And you asked, was the Messenger of Allah ﷺ killing any of the young polytheists? Indeed, the Messenger of Allah ﷺ did not kill any of them, and you should not kill any of them unless you know from them what Al-Khidr knew from the young boy when he killed him."  

أحمد:٣٢٠٠ – حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ مَهْدِيٍّ حَدَّثَنَا جَرِيرُ بْنُ حَازِمٍ عَنْ قَيْسِ بْنِ سَعْدٍ عَنْ يَزِيدَ بْنِ هُرْمُزَ قَالَ كَتَبَ نَجْدَةُ بْنُ عَامِرٍ إِلَى ابْنِ عَبَّاسٍ يَسْأَلُهُ عَنْ أَشْيَاءَ فَشَهِدْتُ ابْنَ عَبَّاسٍ حِينَ قَرَأَ كِتَابَهُ وَحِينَ كَتَبَ جَوَابَهُ فَكَتَبَ إِلَيْهِ إِنَّكَ سَأَلْتَنِي وَذَكَرَ الْحَدِيثَ قَالَ

وَسَأَلْتَ هَلْ كَانَ رَسُولُ اللهِ ﷺ يَقْتُلُ مِنْ صِبْيَانِ الْمُشْرِكِينَ أَحَدًا؟ وَإِنَّ رَسُولَ اللهِ ﷺ لَمْ يَكُنْ يَقْتُلُ مِنْهُمْ أَحَدًا وَأَنْتَ فَلَا تَقْتُلْ مِنْهُمْ أَحَدًا إِلَّا أَنْ تَكُونَ تَعْلَمُ مِنْهُمْ مَا عَلِمَ الْخَضِرُ مِنَ الْغُلَامِ حِينَ قَتَلَهُ