26:20

قَالَ فَعَلْتُهَا إِذًا وَأَنَا مِنَ الضَّالِّينَ

Transliteration:

Qala faAAaltuha ithan waana mina alddalleena

Word by Word:

He said, "I did it when I (was) of those who are astray.

Translations:

Replied [Moses]: I committed it while I was still going astray;

Moses said: "I did it then, when I was in error.

He said: I did it then, when I was of those who are astray.

He said: I did it then when I was of those who err.

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