أَنَّهُ كَتَبَ إِلَى أَبِي مُحَمَّدٍ ع يُخْبِرُهُ بِمَا جَاءَتْ بِهِ الرِّوَايَةُ أَنَّ النَّبِيَّ ص كَانَ يُصَلِّي فِي شَهْرِ رَمَضَانَ وَ غَيْرِهِ مِنَ اللَّيْلِ ثَلَاثَ عَشْرَةَ رَكْعَةً مِنْهَا الْوَتْرُ وَ رَكْعَتَا الْفَجْرِ فَكَتَبَ ع فَضَّ اللَّهُ فَاهُ[3] صَلَّى مِنْ شَهْرِ رَمَضَانَ فِي عِشْرِينَ لَيْلَةً كُلَّ لَيْلَةٍ عِشْرِينَ رَكْعَةً ثَمَانِيَ بَعْدَ الْمَغْرِبِ وَ اثْنَتَيْ عَشْرَةَ بَعْدَ الْعِشَاءَ
It said that he (the Prophet) performed thirteen Rak‘at prayers including al-Witr and the two Rak‘at morning prayer during the nights in the month of Ramadan. He (the Imam) wrote, ‘May Allah break his (narrator’s) mouth. He (the Prophet), during the month of Ramadan in the first twenty nights, performed twenty Rak‘ats