Philippe Coutinho scored his first Barcelona goal since his £142 million move from Liverpool as they thrashed Girona 6-1 in LaLiga.
Former Liverpool man Luis Suarez also scored a hat-trick as the league leaders came from a goal down to beat their Catalan rivals comfortably at the Camp Nou.
Portu gave the visitors a shock early lead, but Lionel Messi set up Suarez to equalise for an instant equalizer.
Messi took on three defenders to score, before rolling a free-kick under the wall for his second.
Coutinho set up his former Liverpool team-mate’s second before curling home his first La Liga goal, and Suarez tapped in Ousmane Dembele's cross for his third.
Victory means Barcelona, who are 10 points clear of second-placed Atletico Madrid, have set a club record of 32 La Liga games unbeaten across two seasons.
They are only 13 games away from becoming the first team to go a full La Liga campaign unbeaten since the 1930s.