Hadith 1292
۞
He (Amīr al-mu’minīn) ordered him to fear Allāh in his secret matters and hidden actions, where there is no witness except He and no one watches save He.
آمَرَهُ بِتَقْوَى اللهِ فِي سَرَائِرِ أُمُورِهِ وَخَفِيَّاتِ عَمَلِهِ، حَيْثُ لَا شَهِيدَ غَيْرُهُ، وَلَا وَكِيلَ دُونَهُ.