Quran 80:3

But what would make you perceive, [O Muḥammad], that perhaps he might be purified

— Saheeh International

for all you know, he might have grown in spirit,

— M. A. S. Abdel Haleem

And how can you know that he might become pure (from sins)?

— Muhammad Muhsin Khan & Muhammad Taqi-ud-Din al-Hilali