Deuteronomy 21:6

And all the elders of that city nearest to the slain one, shall wash their hands over the heifer that has been beheaded in the stream.

Psalm 26:6

I will wash my hands in innocency; so I will go around Your altar, O Jehovah,

Psalm 73:13

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

Job 9:30

If I wash myself with snow water, and make my hands ever so clean,

Psalm 19:12

Who can understand his errors? Oh make me pure from secret faults;

Psalm 51:2

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

Psalm 51:7

Purge 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 shedding blood, O God, O God of my salvation, and my tongue shall sing aloud of Your righteousness.

Jeremiah 2:22

For though you wash yourself with potash, and multiply soap for yourself, yet your iniquity is marked before Me, says the Lord Jehovah.

Matthew 27:24-25

But when Pilate saw that it gained nothing, but rather that a tumult was made, he took water and washed his hands before the crowd, saying, I am innocent of the blood of this just person. You see to it.

Hebrews 9:10

which stood only in meats and drinks, and different kinds of washings and fleshly ordinances, imposed on them until the time of reformation.

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 snow water, and make my hands ever so clean,
Psalm 19:12
Who can understand his errors? Oh make me pure from secret faults;
Psalm 26:6
I will wash my hands in innocency; so I will go around Your altar, O Jehovah,
Psalm 51:2
Wash me completely from my iniquity, and cleanse me from my sin.
Psalm 73:13
Surely I have made my heart pure in vain, and washed my hands in innocence.
Jeremiah 2:22
For though you wash yourself with potash, and multiply soap for yourself, yet your iniquity is marked before Me, says the Lord Jehovah.
Matthew 27:24
But when Pilate saw that it gained nothing, but rather that a tumult was made, he took water and washed his hands before the crowd, saying, I am innocent of the blood of this just person. You see to it.
Hebrews 9:10
which stood only in meats and drinks, and different kinds of washings and fleshly ordinances, imposed on them until the time of reformation.