Out of curiosity..... why do you think he said that?
Paul like JESUS was sent to Preach not baptize.
John 4:1 When therefore the Lord knew how the Pharisees had heard that Jesus made and baptized more disciples than John,
2 (Though Jesus himself baptized not, but his disciples,)
FYI, a lot of people not sure if your one of them don't like Acts 2:38 or Acts 22:16 which is being baptized in JESUS name to get rid of our sins.