26:112

قَالَ وَمَا عِلْمِي بِمَا كَانُوا يَعْمَلُونَ

Transliteration:

Qala wama AAilmee bima kanoo yaAAmaloona

Word by Word:

He said, "And what (do) I know of what they used (to) do?

Translations:

Said he: And what knowledge could I have as to what they were doing [before they came to me]?

He said: "And what do I know as to what they do?

He said: And what knowledge have I of what they may have been doing (in the past)?

He said: And what knowledge have I of what they did?

He said, "And what is my knowledge of what they used to do?