Mark 2:22 (BSB)

And no one pours new wine into old wineskins. If he does, the wine will burst the skins, and both the wine and the wineskins will be ruined. Instead, new wine is poured into new wineskins.”

From Mark 2. Also in the ESV.

Commentary on Mark 2:22

• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Mark 2:18-28: Christ had been put to justify himself in conversing with publicans and sinners: here he is put to justify his disciples; and in what they do according to his will he will justify them, and bear them out. I. He justifies them in their not fasting, which was turned to their reproach by the Pharisees. Why do the Pharisees and the disciples of John fast?
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Mark 2:22: And it came to pass,.... The Vulgate Latin adds, "again"; and so Beza says it was read in one of his copies: that he went through the corn fields on the sabbath day, and his disciples began, as they went, to pluck the ears of corn, and to rub them, and get the grain out of them, and eat them; See Gill on Mat 12:1.