Adh-Dhariyat - 51:38

وَفِي مُوسَى إِذْ أَرْسَلْنَاهُ إِلَى فِرْعَوْنَ بِسُلْطَانٍ مُّبِينٍ
[51:38]
And in Musa: When We sent him to Firon with clear authority.
And in Moses (was another Sign): Behold, We sent him to Pharaoh, with authority manifest.
And in Moses (too, there is a portent) when We sent him unto Pharaoh with clear warrant,