Surah Ash-Shu'ara, ayah 20

قَالَ فَعَلۡتُهَآ إِذٗا وَأَنَا۠ مِنَ ٱلضَّآلِّينَ ٢٠

Qāla fa'altuhā idhan wa ana minad-dāllīn

[Moses] said, "I did it, then, while I was of those astray [i.e., ignorant].