Al Kahf, 6 Ayah
18:6
فَلَعَلَّكَ بَٰخِعٞ نَّفۡسَكَ عَلَىٰٓ ءَاثَٰرِهِمۡ إِن لَّمۡ يُؤۡمِنُواْ بِهَٰذَا ٱلۡحَدِيثِ أَسَفًا ٦
Fala`allaka Bākhi`un Nafsaka `Alá 'Āthārihim 'In Lam Yu'uminū Bihadhā Al-Ĥadīthi 'Asafāan
Then perhaps you would kill yourself through grief over them, [O Muhammad], if they do not believe in this message, [and] out of sorrow.