2ـ عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنْ حَمَّادٍ عَنْ حَرِيزٍ عَنْ مُحَمَّدِ بْنِ مُسْلِمٍ قَالَ سَأَلْتُ أَبَا عَبْدِ الله (عَلَيْهِ الْسَّلام) عَنِ الرَّجُلِ يُصَلِّي وَلاَ يَدْرِي وَاحِدَةً صَلَّى أَمْ ثِنْتَيْنِ قَالَ يَسْتَقْبِلُ حَتَّى يَسْتَيْقِنَ أَنَّهُ قَدْ أَتَمَّ وَفِي الْجُمُعَةِ وَفِي الْمَغْرِبِ وَفِي الصَّلاَةِ فِي السَّفَرِ.
2. Ali ibn Ibrahim has narrated from his father from Hammad, from Hariz from Muhammad ibn Muslim who has said the following: “I once asked abu ‘Abd Allah (a.s.), about a man who performs Salah (prayer) but does not know if he has performed one or two (Rak‘at). He (the Imam) said, ‘He performs it again to ascertain that he has completed it and so also is the case with Friday, al-Maghrib and Salah (prayer) on a journey.’”