Al-Mu'minun 23:103

Waman khaffat mawazeenuhu faola-ikaallatheena khasiroo anfusahum fee jahannama khalidoon

But those whose scales are light - those are the ones who have lost their souls, [being] in Hell, abiding eternally.

and the one whose scales turn out to be light, then such people are the ones who harmed their own selves; in Jahannam (Hell) they are to remain for ever.