Endurance and divine recompense in grief
Nahj al-Balāgha|Volume 1|Book 3|Chapter 291
يَا أَشْعَثُ، إِنْ صَبَرْتَ جَرَى عَلَيْكَ الْقَدَرُ وَأَنْتَ مَأْجُورٌ، وَإِنْ جَزِعْتَ جَرَى عَلَيْكَ الْقَدَرُ وَأَنْتَ مَأْزُورٌ
O’ Ash‘ath, if you endure even then matters will move on as ordained by Allāh but in that case you will deserve reward; while if you lose patience, matters will again move as ordained by Allāh, but in this case you will be bearing the burden (of sins).