Mark 7:3

Now the Pharisees, and all the Jews, do not take food without washing their hands with care, keeping the old rule which has been handed down to them:

Mark 7:13

Making the word of God of no effect by your rule, which you have given: and a number of other such things you do.

Galatians 1:14

And I went farther in the Jews' religion than a number of my generation among my countrymen, having a more burning interest in the beliefs handed down from my fathers.

Colossians 2:8

Take care that no one takes you away by force, through man's wisdom and deceit, going after the beliefs of men and the theories of the world, and not after Christ:

Matthew 15:2-6

Why do your disciples go against the teaching of the fathers? for they take food with unwashed hands.

Mark 7:5

And the Pharisees and the scribes put the question to him, Why do your disciples not keep the rules of the fathers, but take their bread with unwashed hands?

Mark 7:7-10

But their worship is to no purpose, while they give as their teaching the rules of men.

Colossians 2:21-23

Which say there may be no touching, tasting, or taking in your hands,

1 Peter 1:18

Being conscious that you have been made free from that foolish way of life which was your heritage from your fathers, not through a payment of things like silver or gold which come to destruction,

Treasury of Scripture Knowledge

Summary

For the Pharisees, and all the Jews, except they wash their hands oft, eat not, holding the tradition of the elders.

General references

Bible References

The tradition

Mark 7:7
But their worship is to no purpose, while they give as their teaching the rules of men.
Matthew 15:2
Why do your disciples go against the teaching of the fathers? for they take food with unwashed hands.
Galatians 1:14
And I went farther in the Jews' religion than a number of my generation among my countrymen, having a more burning interest in the beliefs handed down from my fathers.
Colossians 2:8
Take care that no one takes you away by force, through man's wisdom and deceit, going after the beliefs of men and the theories of the world, and not after Christ:
1 Peter 1:18
Being conscious that you have been made free from that foolish way of life which was your heritage from your fathers, not through a payment of things like silver or gold which come to destruction,

General references

Luke 5:30
And the Pharisees and their scribes made protests against his disciples, saying, Why do you take food and drink with tax-farmers and sinners?

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain