Mark 7:3

For the Pharisees, and all the Jews, except they wash their hands often, eat not; observing the traditions of the elders.

Mark 7:13

making the word of God of none effect through your own traditions which ye have ordained. And many such things ye do."

Galatians 1:14

and prevailed in the Jews' law, above many of my companions, which were of mine own nation, and was a much more fervent maintainer of the traditions of the elders.

Colossians 2:8

Beware lest any man come and spoil you through philosophy and deceitful vanity, through the traditions of men, and ordinances after the world, and not after Christ.

Matthew 15:2-6

"Why do thy disciples transgress the traditions of the elders? For they wash not their hands, when they eat bread."

Mark 7:5

Then asked him the Pharisees and scribes, "Why walk not thy disciples according to the traditions of the elders, but eat bread with unwashen hands?"

Mark 7:7-10

In vain they worship me, teaching doctrines which are nothing but the commandments of men,

Colossians 2:21-23

"Touch not; Taste not; Handle not:"

1 Peter 1:18

Forasmuch as ye know how that ye were not redeemed with corruptible gold and silver from your vain conversation, which ye received by the traditions of the fathers,

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
In vain they worship me, teaching doctrines which are nothing but the commandments of men,
Matthew 15:2
"Why do thy disciples transgress the traditions of the elders? For they wash not their hands, when they eat bread."
Galatians 1:14
and prevailed in the Jews' law, above many of my companions, which were of mine own nation, and was a much more fervent maintainer of the traditions of the elders.
Colossians 2:8
Beware lest any man come and spoil you through philosophy and deceitful vanity, through the traditions of men, and ordinances after the world, and not after Christ.
1 Peter 1:18
Forasmuch as ye know how that ye were not redeemed with corruptible gold and silver from your vain conversation, which ye received by the traditions of the fathers,

General references

Luke 5:30
And the scribes and Pharisees murmured against his disciples, saying, "Why eat ye and drink ye, with publicans and sinners?"