١٢ـ وَبِهَذَا الإِسْنَادِ عَنْ حَرِيزٍ عَنِ الْفُضَيْلِ قَالَ سَأَلْتُ أَبَا جَعْفَرٍ (عَلَيْهِ الْسَّلام) عَنْ قَوْلِ الله عَزَّ وَجَلَّ الَّذِينَ هُمْ عَلى‏ صَلَواتِهِمْ يُحافِظُونَ قَالَ هِيَ الْفَرِيضَةُ قُلْتُ الَّذِينَ هُمْ عَلى‏ صَلاتِهِمْ دائِمُونَ قَالَ هِيَ النَّافِلَةُ.
12. It narrated through the same chain of narrators from Hariz from af-Fudayl who has said the following: “I asked abu Ja’far , about the words of Allah, the Most Majestic, the Most Glorious, ‘Those who are protective of their Salah (prayers)” (23:9). The Imam said, It means obligatory prayer.’ I then asked about, ‘Those who are ever observing their prayer’ (70:23). The Imam said, It means optional prayers.’” 