To al-Haarith al-Hamdani
Nahj al-Balāgha|Volume 1|Book 2|Chapter 69
وَإِيَّاكَ أَنْ يَنْزِلَ بِكَ الْمَوْتُ وَأَنْتَ آبِقٌ مِنْ رَبِّكَ فِي طَلَبِ الدُّنْيَا، وَإِيَّاكَ وَمُصَاحَبَةَ الْفُسَّاقِ، فَإِنَّ الشَّرَّ بِالشَّرِّ مُلْحَقٌ. وَوَقِّرِ اللهَ، وَأَحْبِبْ أَحِبَّاءَهُ، وَاحْذَرِ الْغَضَبَ، فَإِنَّهُ جُنْدٌ عَظِيمٌ مِنْ جُنُودِ إِبْلِيسَ، وَالسَّلَامُ.
Be on guard lest death comes down upon you while you have fled away from your Lord in search of worldly pleasure. Avoid the company of the wicked because vice adjoins vice. Regard Allāh as great, and love His lovers. Keep off anger because it is one large army from Satan’s armies; and that is an end to the matter.