Deuteronomy 21:6

And all of the elders of that city nearest to the slain person shall wash their hands over the heifer [with] the broken neck in the wadi.

Psalm 26:6

I will wash my hands in innocence, and I will walk about your altar, O Yahweh,

Psalm 73:13

Surely in vain I have kept my heart pure, and washed my hands in innocence.

Job 9:30

If I wash myself with soap, and I cleanse my hands with lye,

Psalm 19:12

Who can perceive [his] errors? Acquit me from hidden [faults].

Psalm 51:2

Wash me thoroughly from my iniquity, and from my sin cleanse me.

Psalm 51:7

Purify me with hyssop, and I shall be clean. Wash me, and I shall be whiter than snow.

Psalm 51:14

Deliver me from the guilt of bloodshed, O God, the God of my salvation; [then] my tongue will sing aloud [of] your righteousness.

Jeremiah 2:22

For if you wash with natron, and you {use much soap}, your guilt [is] sticking as a stain {before} me," {declares} the Lord Yahweh.

Matthew 27:24-25

So Pilate, [when he] saw that he was accomplishing nothing, but instead an uproar was developing, took water [and] washed his hands before the crowd, saying, "I am innocent of the blood of this man. You see to [it]!"

Hebrews 9:10

concerning [instead] only food and drink and different washings, regulations of outward things imposed until the time of setting [things] right.

Treasury of Scripture Knowledge

Summary

And all the elders of that city, that are next unto the slain man, shall wash their hands over the heifer that is beheaded in the valley:

Bible References

Wash their hands

Job 9:30
If I wash myself with soap, and I cleanse my hands with lye,
Psalm 19:12
Who can perceive [his] errors? Acquit me from hidden [faults].
Psalm 26:6
I will wash my hands in innocence, and I will walk about your altar, O Yahweh,
Psalm 51:2
Wash me thoroughly from my iniquity, and from my sin cleanse me.
Psalm 73:13
Surely in vain I have kept my heart pure, and washed my hands in innocence.
Jeremiah 2:22
For if you wash with natron, and you {use much soap}, your guilt [is] sticking as a stain {before} me," {declares} the Lord Yahweh.
Matthew 27:24
So Pilate, [when he] saw that he was accomplishing nothing, but instead an uproar was developing, took water [and] washed his hands before the crowd, saying, "I am innocent of the blood of this man. You see to [it]!"
Hebrews 9:10
concerning [instead] only food and drink and different washings, regulations of outward things imposed until the time of setting [things] right.