The Egypt international was replaced after 59 minutes of the 3-1 home win and he applauded the home fans as he left the field.
Slot was asked afterwards if Salah would be able to play again this season. The last Premier League round is on May 24.
Slot Provides Update on Salah's Injury
"We simply don't know, but what we do know is the season is in four weeks over, so there are not a lot of games being played," he said. "We have to wait and see how his injury is and if he is able to return to play.
"What I do know about Mo is throughout all of these years he has taken such good care of his body that he will have the minimum time required to recover from an injury."
Salah's Troubled Season
Salah has endured a troubled season that saw him engage in a public row with Slot after being dropped and score only seven Premier League goals — his lowest total since joining the club in 2017.
Source: James Robson, The Associated Press