2Pac's buddy Zayd is said to have been one of three people with Tupac Shakur when Pac was shot at Quad Studios in Manhattan in 1994.

He's disputing Dexter Isaac's recent claims that Isaac was the one who shot Pac, that Isaac got his orders from Jimmy Henchman -- who was pissed Pac talked disrespectfully while demanding cash rather than a check for a feature -- and that Pac's guy Stretch set Pac up.

"I was there," Zayd said to Infominds. "Your whole style, the way you look. Your size. Everything. I don't know you bro. That's the Issac cat. Your whole MO it don't fit. I don't see where you was there."

Zayd also insisted that Stretch didn't set Pac up, because that wouldn't make any sense. He also doesn't believe Pac was so broke he demanded cash from Henchman.

Listen Zayd's his side of the story below:

Here's Isaac: