Sura 26 Ash-Shu'ara' (The Poets), ayah 19 – 20
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وَفَعَلْتَ فَعْلَتَكَ الَّتِي فَعَلْتَ وَأَنْتَ مِنَ الْكَافِرِينَ
And (then) you did your deed which you did, and you were of the ungrateful."
26:19 -
قَالَ فَعَلْتُهَا إِذًا وَأَنَا مِنَ الضَّالِّينَ
(Moses) said, "I did it, then, while I was of those astray.
26:20
Translation: Saheeh International