Surah Ash-Shu'ara 26:86

وَٱغْفِرْ لِأَبِىٓ إِنَّهُۥ كَانَ مِنَ ٱلضَّآلِّينَ

And forgive my father. Indeed, he has been of those astray.

Translation: Saheeh International

Tafsir

And forgive my father for indeed he is one of those who are astray by Your relenting to him and forgiving him this was before it became clear to him Abraham that he his father was an enemy of God as mentioned in sūrat Barā’a Q. 9114.

Excerpt from Tafsir al-Jalalayn, commentary on 26:86, via Quran.com. The reader has the full commentary and 9 more tafsirs.