New revelation sent to prophets and messengers

[miracle114]

Salaam
The traditional idea is that all messengers are prophets and that new revelation is only given to messengers.
Brother Joseph highlighted a few verses that confirm the opposite, that prophets are given new revelation and that all prophets are messengers. There are a few verses to back brother Joseph's Idea.
However in 2:285 we are told that "the messenger believed in what was revealed to him". We know Allah only reveals a book of guidance that he himself is witness to.
Also in 5:83, "and when they hear what has been revealed to the messenger".
I am a bit confused now regarding both ideas, of what is revealed and to whom.

Kind regards and thank you.

[miracle114]

Salaam
Another verse I found that talks a bit about a book being sent to the messenger. Not too sure if it's simply referring to muhammad alone in this context who was also a prophet.

O you who have believed, believe in Allah and His Messenger and the Book that He sent down upon His Messenger and the Scripture which He sent down before. And whoever disbelieves in Allah, His angels, His books, His messengers, and the Last Day has certainly gone far astray.

-Surah An-Nisa', Ayah 136