Instructions for an officer sent to collect tax
Nahj al-Balāgha|Volume 1|Book 2|Chapter 26
وَمَنِ اسْتَهَانَ بِالْأَمَانَةِ، وَرَتَعَ فِي الْخِيَانَةِ، وَلَمْ يُنَزِّهَ نَفْسَهُ وَدِينَهُ عَنْهَا، فَقَدْ أَحَلَّ بِنَفْسِهِ الذُّلَّ وَالْخِزْيَ فِي الدُّنْيَا، وَهُوَ فِي الْآخِرَةِ أَذَلُّ وَأَخْزَى.
He who treats the trust lightly and indulges in treachery and does not keep himself and his faith untarnished by it has certainly secured humiliation in this world, and his humiliation and disgrace in the next world will be greater.