Then came to him the disciples of John, saying, Why do we and the Pharisees fast oft, but thy disciples fast not? (9:14)

--Mark--

And the disciples of John and of the Pharisees used to fast: and they come and say unto him, Why do the disciples of John and of the Pharisees fast, but thy disciples fast not? (2:18)

--Luke--

I fast twice in the week, I give tithes of all that I possess. (18:12)