Surah Taha, ayah 70

20:70

فَأُلۡقِيَ ٱلسَّحَرَةُ سُجَّدٗا قَالُوٓاْ ءَامَنَّا بِرَبِّ هَٰرُونَ وَمُوسَىٰ ٧٠

Fa ulqiyas-saharatu sujjadan qālū āmannā birabbi hārūna wamūsā

So the magicians fell down in prostration.841 They said, "We have believed in the Lord of Aaron and Moses."

Footnotes

841 After they had seen the miracles which Allāh had given Moses and that they were realities and not merely impressions of magic.