3.127 [Machine] The boy reaches maturity in his prayer, so he completes it or prays it at the beginning of its time, then he reaches maturity and does not need to repeat it because he did what he was commanded to do, and this is considered acceptable due to his leaving it.

٣۔١٢٧ بَابُ الصَّبِيِّ يَبْلُغُ فِي صَلَاتِهِ فَيُتِمُّهَا أَوْ يُصَلِّيهَا فِي أَوَّلِ الْوَقْتِ، ثُمَّ يَبْلُغُ فَلَا يَلْزَمُهُ إِعَادَتُهَا لِأَنَّهُ فَعَلَ مَا كَانَ مَأْمُورًا بِفِعْلِهِ مَضْرُوبًا عَلَى تَرْكِهِ