Never a believer is stricken with discomfort, hardship or illness, grief or even with mental worry that his sins are not expiated for him. (Using translation from Muslim 2573)
أَنَّهُ سَمِعَ رَسُولَ اللهِ ﷺ يَقُولُ مَا يُصِيبُ الْمُؤْمِنَ مِنْ وَصَبٍ وَلَا نَصَبٍ وَلَا سَقَمٍ وَلَا حَزَنٍ وَلَا أَذًى حَتَّى الْهَمِّ يُهِمُّهُ إِلَّا اللهُ يُكَفِّرُ عَنْهُ مِنْ سَيِّئَاتِهِ