Quran 18, Al-Kahf (The Cave)

18:6 Then perhaps you would kill yourself through grief over them, [O Muhammad], if they do not believe in this message, [and] out of sorrow.

فَلَعَلَّكَ بَاخِعٌ نَفْسَكَ عَلَى آثَارِهِمْ إِنْ لَمْ يُؤْمِنُوا بِهَذَا الْحَدِيثِ أَسَفًا