Surah Ash-Shu'ara 26:19

وَفَعَلْتَ فَعْلَتَكَ ٱلَّتِى فَعَلْتَ وَأَنتَ مِنَ ٱلْكَـٰفِرِينَ

And [then] you did your deed which you did, and you were of the ungrateful."

Translation: Saheeh International

Tafsir

And you committed that deed of yours — namely his slaying of the Egyptian — being an ingrate’ a denier of my favours to you in having reared you among us and not enslaved you.

Excerpt from Tafsir al-Jalalayn, commentary on 26:19, via Quran.com. The reader has the full commentary and 9 more tafsirs.