قَالَ أَبُو عَبْدِ اللَّهِ ع يَا إِسْحَاقُ خَفِ اللَّهَ كَأَنَّكَ تَرَاهُ وَ إِنْ كُنْتَ لَا تَرَاهُ فَإِنَّهُ يَرَاكَ[1] فَإِنْ كُنْتَ تَرَى أَنَّهُ لَا يَرَاكَ فَقَدْ كَفَرْتَ وَ إِنْ كُنْتَ تَعْلَمُ أَنَّهُ يَرَاكَ ثُمَّ بَرَزْتَ لَهُ بِالْمَعْصِيَةِ فَقَدْ جَعَلْتَهُ مِنْ أَهْوَنِ النَّاظِرِينَ عَلَيْكَ[2].
“Once Abu ‘Abdillah (a.s.) said, ‘O Ishaq, have fear of Allah as if you see Him. Even if you do not see Him He sees you. If you think that He does not see you, you have certainly rejected belief. If you believe that He sees you and you disobey Him you have considered Him as the most insignificant observer.”’