Messi had also scored the club's 5000th league goal in 2009 and this was his 15th consecutive season scoring in Spain's top flight.
"We're lucky to be involved in football during the era in which he is playing - we want him to pull a rabbit from the hat every day".
"There's still room for Messi to surprise us", he added.
"I had no idea he was going to shoot like that, for us it's spectacular that he has such a range of options", Busquets said.
Even visiting coach Abelardo, a former Barca defender, was full of praise for Messi's performance. 64' - GOAL BARCELONA - Messi sneaks a free kick under the jumping wall and tucks it into the corner to give the hosts a 1-0 lead. "But as the minutes went by, we got better and better".
Aguero hat-trick powers Man City past Mooy-less Huddersfield
A delighted Guardiola told Sky Sports: 'Last season Huddersfield played five at the back. They don't fit into the system Klopp wants.
Barcelona have failed to reach the past three Champions League finals, with their bitter rivals Real Madrid bringing home the goods, but the Catalan giants may lift the famous trophy in 2018/19 judging by this theory.
Mario Hermoso scored just before half time to put the visitors ahead but his central defensive partner David Lopez put through his own net in the second half.
Alba paid tribute to Messi post-match, claiming no player will ever replicate the 31-year-old.
The free kick goal was Barcelona's 6000th La Liga goal. They defended very well out there, they were very compact.