Mark 7:3

for the Pharisees, and all the Jews, if they do not wash the hands to the wrist, do not eat, holding the tradition of the elders,

Mark 7:13

setting aside the word of God for your tradition that ye delivered; and many such like things ye do.'

Galatians 1:14

and I was advancing in Judaism above many equals in age in mine own race, being more abundantly zealous of my fathers' deliverances,

Colossians 2:8

See that no one shall be carrying you away as spoil through the philosophy and vain deceit, according to the deliverance of men, according to the rudiments of the world, and not according to Christ,

Matthew 15:2-6

'Wherefore do thy disciples transgress the tradition of the elders? for they do not wash their hands when they may eat bread.'

Mark 7:5

Then question him do the Pharisees and the scribes, 'Wherefore do thy disciples not walk according to the tradition of the elders, but with unwashed hands do eat the bread?'

Mark 7:7-10

and in vain do they worship Me, teaching teachings, commands of men;

Colossians 2:21-23

-- thou mayest not touch, nor taste, nor handle --

1 Peter 1:18

having known that, not with corruptible things -- silver or gold -- were ye redeemed from your foolish behaviour delivered by 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
and in vain do they worship Me, teaching teachings, commands of men;
Matthew 15:2
'Wherefore do thy disciples transgress the tradition of the elders? for they do not wash their hands when they may eat bread.'
Galatians 1:14
and I was advancing in Judaism above many equals in age in mine own race, being more abundantly zealous of my fathers' deliverances,
Colossians 2:8
See that no one shall be carrying you away as spoil through the philosophy and vain deceit, according to the deliverance of men, according to the rudiments of the world, and not according to Christ,
1 Peter 1:18
having known that, not with corruptible things -- silver or gold -- were ye redeemed from your foolish behaviour delivered by fathers,

General references

Luke 5:30
and the scribes and the Pharisees among them were murmuring at his disciples, saying, 'Wherefore with tax-gatherers and sinners do ye eat and drink?'