(Annajm) 53 : 56
هَٰذَا نَذِيرٌ مِنَ النُّذُرِ الْأُولَىٰ
This is a warning from the warnings of earlier.
The only Book Adhikr is revealed as a warning from Messenger Noah to Messenger Muhammad. And Muhammad has not brought any new warning, as the Meccan pagans were arguing. Just like that, the Messenger is also not a new warner; instead, he is the last Messenger and Prophet as explained in verse 33: 40. See explanation 5: 48; 21: 24-25; and 42: 13-14.