Surah Al-A'raf, Verse 8

وَٱلۡوَزۡنُ يَوۡمَئِذٍ ٱلۡحَقُّۚ فَمَن ثَقُلَتۡ مَوَٰزِينُهُۥ فَأُوْلَٰٓئِكَ هُمُ ٱلۡمُفۡلِحُونَ٨

wal-waznu yawma-idhin l-ḥaqu faman thaqulat mawāzīnuhu fa-ulāika humu l-muf'liḥūna

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.