Though Jesus himself baptized not - The reason why Jesus did not baptize was probably because, if He had baptized, it might have made unhappy divisions among his followers: those might have considered themselves most worthy or honored who had been baptized by Him. Compare 1 Corinthians 1:17.
Related Commentaries of John 4:2
John 4:2
2 (Though Jesus himself baptized not, but his disciples,)