It's from the OG of Runnin. You guys just don't know what you're talking about, assuming you're talking about the verse that starts off with "Memories of high speed when the cops crash..." Dante had explained it several times in the past, that was the OG, though that verse had not been heard (at least outside of well-connected circles) until the Tupac Resurrection soundtrack.
What a lot of people THINK is the original version is the one from the One Million Strong soundtrack where Pac's verse starts off with "Got me runnin' and dodgin' for my survival" or whatever he said. That was a verse that Pac had recorded afterward and replaced the OG verse that ended up on Runnin (Dying to Live). It is the OG beat, but again, that verse was not the first one committed to reel.