Surah 'Abasa 80:7

وَمَا عَلَيْكَ أَلَّا يَزَّكَّىٰ

And not upon you [is any blame] if he will not be purified.

Translation: Saheeh International

Tafsir

yet it is not your concern if he does not cleanse himself if he does not believe.

Excerpt from Tafsir al-Jalalayn, commentary on 80:7, via Quran.com. The reader has the full commentary and 9 more tafsirs.