Surah Nuh 71:10

فَقُلْتُ ٱسْتَغْفِرُوا۟ رَبَّكُمْ إِنَّهُۥ كَانَ غَفَّارًا

And said, 'Ask forgiveness of your Lord. Indeed, He is ever a Perpetual Forgiver.

Translation: Saheeh International

Tafsir

saying “Ask your Lord for forgiveness from idolatry. Assuredly He is ever Forgiving.

Excerpt from Tafsir al-Jalalayn, commentary on 71:10, via Quran.com. The reader has the full commentary and 9 more tafsirs.