Qur'ān 7:8 · Al-A'raf (الأعراف)

وَٱلْوَزْنُ يَوْمَئِذٍ ٱلْحَقُّ ۚ فَمَن ثَقُلَتْ مَوَٰزِينُهُۥ فَأُو۟لَـٰٓئِكَ هُمُ ٱلْمُفْلِحُونَ

And the weighing [of deeds] that Day will be the truth. So those whose scales are heavy - it is they who will be the successful.