Surah Az-Zalzalah 99:8
وَمَن يَعْمَلْ مِثْقَالَ ذَرَّةٍ شَرًّا يَرَهُۥ
And whoever does an atom's weight of evil will see it.
Translation: Saheeh International
Tafsir
and whoever does an atom’s weight of evil shall see it he shall see its requital.
Excerpt from Tafsir al-Jalalayn, commentary on 99:8, via Quran.com. The reader has the full commentary and 9 more tafsirs.