Surah Al-Mu'minun 23:118

وَقُل رَّبِّ ٱغْفِرْ وَٱرْحَمْ وَأَنتَ خَيْرُ ٱلرَّٰحِمِينَ

And, [O Muḥammad], say, "My Lord, forgive and have mercy, and You are the best of the merciful."

Translation: Saheeh International

Tafsir

And say ‘My Lord forgive and have mercy on believers — this ‘mercy’ adds to the ‘forgiveness’ in terms of God’s grace — and You are the best of the merciful’ the most excellent of those who have mercy.

Excerpt from Tafsir al-Jalalayn, commentary on 23:118, via Quran.com. The reader has the full commentary and 9 more tafsirs.