الزُّهْدُ كُلُّهُ بَيْنَ كَلِمَتَينِ مِنَ الْقُرْآنِ: قَالَ اللهُ عزّوجلّ: (لكيلا تأسَوا عَلَى مَا فَاتَكُمْ ، وَ لا تَفْرَحُوا بِما آتَاكُمْ) ، فَمَنْ لَمْ يَأْسَ عَلَى الْمَاضِي، وَلَمْ يَفْرَحْ بِالاْتِي، فَقَدْ أَخَذَ الزُّهْدَ بِطَرَفَيْهِ
Imam Ali (as):
Asceticism [Zuhd] is summed up between two phrases in the Qur'an, where Allah, most High, says, "So that you may not grieve for what has escaped you, nor be exultant at what He has given you." Therefore, one who neither grieves about past losses nor is overjoyed about the possessions he is granted has perfected his asceticism from both sides.'
Source:
Nahj al-Balāgha
No553
ID: 63078