36:61

وَأَنِ اعْبُدُونِي هَٰذَا صِرَاطٌ مُّسْتَقِيمٌ

Transliteration:

Waani oAAbudoonee hatha siratun mustaqeemun

Word by Word:

And that you worship Me? This (is) a Path Straight.

Translations:

and that you should worship Me [alone]? This would have been a straight way!

"And that ye should worship Me, (for that) this was the Straight Way?

But that ye worship Me? That was the right path.

And that you serve Me. This is the right way.

And that you worship [only] Me? This is a straight path.