Chapter on the Ages That Children Are Commanded to Pray
Tahdhīb al-Aḥkām|Volume 2|Book 1|Chapter 18
عَنْهُ عَنِ اَلْعَبَّاسِ بْنِ مَعْرُوفٍ عَنْ حَمَّادِ بْنِ عِيسَى عَنْ مُعَاوِيَةَ بْنِ وَهْبٍ قَالَ: سَأَلْتُ أَبَا عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ فِي كَمْ يُؤْخَذُ اَلصَّبِيُّ بِالصَّلاَةِ فَقَالَ« فِيمَا بَيْنَ سَبْعِ سِنِينَ وَ سِتِّ سِنِينَ» قُلْتُ فِي كَمْ يُؤْخَذُ بِالصِّيَامِ فَقَالَ« فِيمَا بَيْنَ خَمْسَ عَشْرَةَ أَوْ أَرْبَعَ عَشْرَةَ وَ إِنْ صَامَ قَبْلَ ذَلِكَ فَدَعْهُ فَقَدْ صَامَ اِبْنِي فُلاَنٌ قَبْلَ ذَلِكَ وَ تَرَكْتُهُ»
From him, from Al-‘Abbas ibn Ma‘ruf, from Hammad ibn ‘Isa, from Mu‘awiyah ibn Wahb, who said:
I asked Abu Abdillah عليه السلام, peace be upon him: “At what age should a child be made to observe the prayer?” Imam عليه السلام said: "Between six and seven years of age." I asked: “At what age should he be made to fast?” Imam عليه السلام said: "Between fourteen or fifteen years of age. And if he fasts before that, then let him be, my son so-and-so fasted before that, and I let him do so."
- Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 2, p. 411
- Ṣaḥīḥ al-Tahdhīb, p. 251