Matthew
Matthew 26:8ESV·traditional attribution

And when the disciples saw it, they were indignant, saying, “Why this waste?

John Calvin Reformed @genevareformer

8. And when the disciples saw it. This also is not unusual with the Evangelists, when a thing has been done by one, to attribute it to many persons, if they give their consent to it. John says that the murmur proceeded from Judas, who betrayed Christ, (John 12:4.) Matthew and Mark include all the disciples along with him.

John Gill Reformed Baptist @doctorgill

But when his disciples saw it,.... What the woman did, what a costly box of ointment it was, and with what profusion she used it, they had indignation: Mark says, "within themselves", Mar 14:4; either among themselves, or their indignation was secret in their breasts; their resentment was private, though it might be betrayed by their looks, and afterwards showed itself in words.

Albert Barnes Presbyterian @notesbybarnes

Verse 8. They had indignation. John says that Judas expressed indignation. Probably some of the others felt indignation, but Judas only gave vent to his feelings. The reason why Judas was indignant was that he had the bag, (;) i.e., the purse, or repository of articles given to the disciples and to the Saviour.