Surah Yunus — Ayah 100 (10:100)
وَمَا كَانَ لِنَفۡسٍ أَن تُؤۡمِنَ إِلَّا بِإِذۡنِ ٱللَّهِۚ وَيَجۡعَلُ ٱلرِّجۡسَ عَلَى ٱلَّذِينَ لَا يَعۡقِلُونَ ١٠٠
English translation (Saheeh International)
And it is not for a soul [i.e., anyone] to believe except by permission of Allāh, and He will place defilement1 upon those who will not use reason.
- - Among its meanings are filth, wrath, punishment, disbelief, confusion and error.
Brief commentary
It is not possible for any soul to believe by itself unless Allah permits. Belief only happens with His will, so do not lose yourself in grief over them. Allah places suffering and disgrace on those who do not apply their minds to His proof, instructions and prohibitions.