﴿ وَفِى مُوسَىٰٓ إِذْ أَرْسَلْنَٰهُ إِلَىٰ فِرْعَوْنَ بِسُلْطَٰنٍۢ مُّبِينٍۢ ﴾

“AND IN [the story of Pharaoh and] Moses, too, [We left the same message: for] when We sent him unto Pharaoh with [Our] manifest authority,”

And a sign too in Moses wa-fī Mūsā is a supplement to fīhā ‘therein’ that is to say We also left a sign in the story of Moses when We sent him to Pharaoh vested with a clear warrant with a manifest proof;