Liverpool forward Mohamed Salah has revealed head coach Arne Slot was frustrated with his team's lacklustre first-half display against Southampton, with the Premier League leaders coming from behind after the break to win the game 3-1.

Will Smallbone opened the scoring for the visitors at Anfield when he capitalised on a defensive mix-up between Alisson Becker and Virgil van Dijk. Darwin Núñez then equalised six minutes into the second half before a brace of Salah penalties secured the three points for Liverpool.

However, Salah -- who has now moved up to third on the club's list of all-time goalscorers -- admitted that Slot wasn't happy during his half-time team talk.

"It was a bit of frustration," Salah told Premier League Productions after the match. "His head was going for us. We were sloppy and slow in the first half. I don't think we played good today. If you want to win the Champions League or Premier League you have to win these games like that."

Slot, who watched Saturday's game from the stands as he continued serving his two-match touchline ban, was also candid about his opinion of his team's first-half display in his post-match news conference.

"I didn't give them compliments at half-time, I can tell you," the Dutchman said. "Maybe I can tell you it was because I was sitting up there instead of in the line. When you watch a game from there you always feel that, ah, even I can play in this game but when you are on the line there is more tempo.

"I don't think I was wrong if I said at half-time that the energy levels were far, far, far too low. That had to change and that is why we made three substitutions, apart from energy to bring in quality.

"Nine out of 10 times, when you take three out, the other eight are like, something else should happen. That was the only thing I could come up with at half-time to create something different for the second half."

Liverpool are now 16 points clear at the top of the Premier League table, having played a game more than second-placed Arsenal, who take on Manchester United on Sunday afternoon.