Diddy Punched Drake Over a Song

EXCLUSIVE

Diddy assaulted Drake early Monday morning because of a feud over a song … TMZ has learned.

As we reported, Diddy punched Drake at LIV nightclub in Miami Beach, and we were told it was because Diddy felt disrespected by the rapper, and now we know why.

Our sources say, producer Boi-1da had given both Diddy and Drake a song to record…