DMX
Ja Rule started off as friends with DMX, as well as Jay-Z. DMX, Jay-Z and Ja Rule were part of a group at the time named Murder Inc. (The name was later used by Ja's producer Irv Gotti for his record label.) They recorded songs under the name together. DMX and Jay-Z also guest starred on Ja Rule's first album on the track "It's Murda". He released a track on Cradle 2 The Grave Soundtrack called Go to Sleep with Eminem, Obie Trice were they all took shots at Ja Rule. Eventually Ja Rule's feuds with Busta Rhymes, Dr. Dre, and Eminem went away.
The two rappers waged a war of words for years after DMX accused Ja Rule of copying his hardcore style on records. DMX admitted that he initially wanted to end with his rap rival when he was released from jail in 2005 before making peace: "Gotti came to me in jail and said I want to make peace with you and him", said DMX, "I was like, 'Alright Gotti, let's do it. But I need five minutes in a room with your man. I got to put my hands on him.'"
DMX and Ja Rule finally ended their feud at VH1's 2009 Hip Hop Honors.