“Then the Pharisees and scribes asked him, Why walk not thy disciples according to the tradition of the elders, but eat bread with unwashen hands?”
Mark 7:5 — Greek Interlinear
Church Fathers on Mark 7:5
The people of the land of Gennesareth, who seemed to be unlearned men, not only come themselves, but also bring their sick to the Lord, that they may but succeed in touching the hem of His garment. But the Pharisees and Scribes, who ought to have been the teachers of the people, run together to the Lord, not to seek for healing, but to move captious questions.
For the disciples of the Lord, who were taught only the practice of virtue, used to eat in a simple way, without washing their hands; but the Pharisees, wishing to find an occasion of blame against them, took it up; they did not indeed blame them as transgressors of the law, but for transgressing the traditions of the elders.
Wonderful is the folly of the Pharisees and Scribes; they accuse the Son of God, because He keeps not the traditions and precepts of men. But 'common' is here put for unclean; for the people of the Jews, boasting that they were the portion of God, called those meats common, which all made use of.