53:56
هَـٰذَا نَذِيرٌ مِّنَ ٱلنُّذُرِ ٱلْأُولَىٰٓ
hādhā nadhīrun mina l-nudhuri l-ūlā
This is a warning just like the warnings sent in former times.
This (Muhammad صلى الله عليه وسلم) is a warner (Messenger) of the (series of) warners (Messengers) of old.