John Gill Commentary Mark 2:16

"And the scribes of the Pharisees, when they saw that he was eating with the sinners and publicans, said unto his disciples, [How is it] that he eateth and drinketh with publicans and sinners?" — Mark 2:16 (ASV)

And when the Scribes and Pharisees saw him eat
They were offended at his eating and drinking, though it was in moderation; because he did not fast as they, and their disciples did; and especially, that he eat

with publicans and sinners ;
men of very infamous characters, and bad lives, with whom the Pharisees disdained to keep company:

they said unto his disciples, how is it that he eateth and drinketh
with publicans and sinners ?
The Vulgate Latin, Arabic, Persic, and Ethiopic versions read, "your master", (See Gill on Matthew 9:11); so some Greek copies here.