John Lightfoot on Matthew 26:9

[And be given to the poor.] That it was Judas especially who cavilled at this, we have reason to believe from what is said of him in another supper, John 12:4. Compare this with those words, John 13:29. When Jesus said to Judas, "What thou doest, do quickly," some thought he had meant, "Give something to the poor." That supper, I presume, was the same with this: and see, how these things agree! When a complaint arose of that prodigal waste of the ointment here, and before in John 12, and that it seemed unfit to some that that should be spent so unadvisedly upon our Lord which might have been bestowed much better, and more fitly, upon the poor, how easily might the others think that Christ had spoken to him about giving somewhat to the poor, that he might show his care of the poor, notwithstanding what he had before said concerning them, and the waste of the ointment.