Surah Al-A'raf — Ayah 8 (7:8)
وَٱلۡوَزۡنُ يَوۡمَئِذٍ ٱلۡحَقُّۚ فَمَن ثَقُلَتۡ مَوَٰزِينُهُۥ فَأُوْلَٰٓئِكَ هُمُ ٱلۡمُفۡلِحُونَ ٨
English translation (Saheeh International)
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.
Brief commentary
The weighing of what they did on the Day of Judgement will be with justice, with no one being wronged in the least. Those whose good actions weigh more than their bad actions have succeeded in reaching the goal and being saved from what they feared.