I'm not sure. I might fold here, I might not. He could be pushing there just because of the formidable size of the pot, trying to steal. He could also have a straight or a boat. In a very similar situation today I ended up calling a guy who had hit quads (I had top two pair incl. the pair on the board), so I'd be lying if I said I would always fold that. But it looks like a probable fold to me.