فَأُلۡقِيَ ٱلسَّحَرَةُ سُجَّدٗا قَالُوٓاْ ءَامَنَّا بِرَبِّ هَٰرُونَ وَمُوسَىٰ ٧٠
So the magicians fell down in prostration.1 They said, "We have believed in the Lord of Aaron and Moses."
Translation: Saheeh International (English)
1 After they had seen the miracles which Allāh had given Moses and that they were realities and not merely impressions of magic.
Each word's meaning and sound
So Moses threw down his stick and it turned into a snake and swallowed up what the magicians had produced. The magicians then all prostrated to Allah once they came to know that what Moses had was not magic, but it was from Allah and they said: We have faith in the Lord of Moses and Aaron, the Lord of all created things.
Al-Mukhtasar in interpreting the Noble Quran