When something happens that you cannot make sense of
What is promised to the one who believes when it lands on him.
مَآ أَصَابَ مِن مُّصِيبَةٍ إِلَّا بِإِذْنِ ٱللَّهِ ۗ وَمَن يُؤْمِنۢ بِٱللَّهِ يَهْدِ قَلْبَهُۥ ۚ وَٱللَّهُ بِكُلِّ شَىْءٍ عَلِيمٌ
Mā aṣāba min muṣībatin illā bi-idhni-llāh, wa man yu'min billāhi yahdi qalbah…
“No disaster strikes except by permission of Allāh. And whoever believes in Allāh - He will guide his heart. And Allāh is Knowing of all things.”
The promise is not that it will be explained to you. It is that your heart will be guided through it.
Source
The Qur'an · 64:11
Qur'an
- Qur'anic text in the Uthmani script via Quran.com; translation: Saheeh International