Surah Al-A'raf 7:9

وَمَنْ خَفَّتْ مَوَٰزِينُهُۥ فَأُو۟لَـٰٓئِكَ ٱلَّذِينَ خَسِرُوٓا۟ أَنفُسَهُم بِمَا كَانُوا۟ بِـَٔايَـٰتِنَا يَظْلِمُونَ

And those whose scales are light - they are the ones who will lose themselves for what injustice they were doing toward Our verses.

Translation: Saheeh International

Tafsir

And as for those whose scales are light because of evil deeds those are the ones who have lost their souls by causing them to travel towards the Fire because they mistreated they knowingly denied Our signs.

Excerpt from Tafsir al-Jalalayn, commentary on 7:9, via Quran.com. The reader has the full commentary and 9 more tafsirs.