Al-Kāfi - Volume 6 > Kindness to Children
Hadith #3

أَحْمَدُ بْنُ مُحَمَّدٍ عَنْ عَلِيِّ بْنِ فَضَّالٍ عَنْ عَبْدِ اللَّهِ بْنِ مُحَمَّدٍ الْبَجَلِيِّ عَنْ أَبِي عَبْدِ اللَّهِ ( عليه السلام ) قَالَ قَالَ رَسُولُ اللَّهِ ( صلى الله عليه وآله ) أَحِبُّوا الصِّبْيَانَ وَ ارْحَمُوهُمْ وَ إِذَا وَعَدْتُمُوهُمْ شَيْئاً فَفُوا لَهُمْ فَإِنَّهُمْ لَا يَدْرُونَ إِلَّا أَنَّكُمْ تَرْزُقُونَهُمْ .

3. Ahmad ibn Muhammad has narrated from Ali ibn Faddal from ‘Abd Allah ibn Muhammad al-Bajaliy who has said the following: “Abu ‘Abd Allah, ‘Alayhi al-Salam, has said that the Messenger of Allah, O Allah, grant compensation to Muhammad and his family worthy of their services to Your cause, has said, ‘You must love children and be kind to them. If you promise them, then keep your promise because they do not know anyone except you who provides them sustenance.’”