"But when the disciples saw it, they were indignant, saying, Why this waste?" - Matt 26:8.
The disciples considered that what Mary did in pouring out an expensive alabaster flask of ointment on Jesus was a waste . The disciples thought it would be a good thing to sell the alabaster flask and give the money to the poor. But the Lord doesn't just want our good deeds as the disciples had in their concept. He desires us to waste ourselves on Him.