The Catalans has now all but won the La Liga this season.
Xavi said: “It is a historic result.
“We are ecstatic. We are not yet champions, but it is an important step towards the title.
“It is one of our better team performances.”
He continued: “We pressured them and were able to score a lot of goals.
“All the Barca fans deserve this. There are only a few games left, and we must not let up.”