To al-Haarith al-Hamdani
Nahj al-Balāgha|Volume 1|Book 2|Chapter 69
وَاعْلَمْ أَنَّ أَفْضَلَ الْمُؤْمِنِينَ أَفْضَلُهُمْ تَقْدِمَةً مِنْ نَفْسِهِ وَأَهْلِهِ وَمَالِهِ، فَإِنَّكَ مَا تُقَدِّمْ مِنْ خَيْرٍ يَبْقَ لَكَ ذُخْرُهُ، وَمَا تُؤَخِّرْهُ يَكُنْ لِغَيْرِكَ خَيْرُهُ. وَاحْذَرْ صَحَابَةَ مَنْ يَفِيلُ رَأْيهُ، وَيُنْكَرُ عَمَلُهُ، فَإِنَّ الصَّاحِبَ مُعْتَبَرٌ بِصَاحِبِهِ.
Know that the most distinguished among the believers is he who is the most forward of them in spending from himself, his family and his property, because whatever good you send forward will remain in store for you and the benefit of whatever you keep behind will be derived by others. Avoid the company of the person whose opinion is unsound and whose action is detestable, because a man is judged after his companion.