Reflections on mortality and divine fear
Nahj al-Balāgha|Volume 1|Book 3|Chapter 130
ثُمَّ الْتَفَتَ إِلَى أَصْحَابِهِ فَقَالَ: أَمَا لَوْ أُذِنَ لَهُمْ فِى الْكَلَامِ لَأَخْبَرُوكُمْ أَنَّ خَيْرَ الزَّادِ التَّقْوَىٰ.
Then Amīr al-mu’minīn, peace be upon him, turned to his companions and said: Beware If they were allowed to speak they would inform you that: Verily, the best provision is fear of Allāh. (Qur’ān, 2:197)