Surah Al-Kahf, Verse 6

فَلَعَلَّكَ بَٰخِعٞ نَّفۡسَكَ عَلَىٰٓ ءَاثَٰرِهِمۡ إِن لَّمۡ يُؤۡمِنُواْ بِهَٰذَا ٱلۡحَدِيثِ أَسَفًا٦

falaʿallaka bākhiʿun nafsaka ʿalā āthārihim in lam yu'minū bihādhā l-ḥadīthi asafan

Then perhaps you would kill yourself through grief over them, [O Muḥammad], if they do not believe in this message, [and] out of sorrow.