Mark 2:6, 16, 18

And some of the scribes were sitting there and reasoning in their hearts

And when the scribes and Pharisees saw Him eating with the tax collectors and sinners, they said to His disciples, “How is it that He eats and drinks with tax collectors and sinners?”

The disciples of John and of the Pharisees were fasting. Then they came and said to Him, “Why do the disciples of John and of the Pharisees fast, but Your disciples do not fast?”