Diddy punched Drake over a song

Rapper Sean John Combs, known by his stage names Diddy, reportedly assaulted fellow musician Drake because of a feud over a song.

According to sources, the song that sparked the fight was "0 to 100/ The Catch Up", which has been nominated for two Grammys -- Best Rap Performance and Best Rap Song, this year, reports tmz.com.

Diddy punched Drake at LIV nightclub in Miami Beach Monday, and it was because Diddy felt disrespected by the rapper.

According to the sources, producer Boi-1da had given both Diddy and Drake a song to record more than eight months ago. Diddy sat on the song, which frustrated Drake because he wanted to record it. So recently Drake recorded the song on his own and it did well, which upset Diddy.

Diddy saw Drake at LIV Monday for the first time since the song was released. Sources close to Diddy say he confronted Drake, who just blew him off, and that's when Diddy said, "You'll never disrespect me again," and then punched him.

Drake ended up at a hospital because in the ruckus he hit his shoulder and exacerbated an old injury.