Numbers 31:24

And you shall wash your clothes on the seventh day and be clean, and afterward you may enter the camp.”

Leviticus 11:25

and whoever picks up any of their carcasses shall wash his clothes and be unclean until evening.

Leviticus 14:9

It will be on the seventh day that he shall shave off all his hair: he shall shave his head and his beard and his eyebrows, even all his hair. He shall then wash his clothes and bathe his body in water and be clean.

Leviticus 15:13

‘Now when the man with the discharge becomes cleansed from his discharge, then he shall count off for himself seven days for his cleansing; he shall then wash his clothes and bathe his body in running water and will become clean.

Numbers 19:19

Then the clean person shall sprinkle on the unclean on the third day and on the seventh day; and on the seventh day he shall purify him from uncleanness, and he shall wash his clothes and bathe himself in water and shall be clean by evening.

Treasury of Scripture Knowledge

Summary

And ye shall wash your clothes on the seventh day, and ye shall be clean, and afterward ye shall come into the camp.

Bible References

General references

Numbers 19:19
Then the clean person shall sprinkle on the unclean on the third day and on the seventh day; and on the seventh day he shall purify him from uncleanness, and he shall wash his clothes and bathe himself in water and shall be clean by evening.
Leviticus 11:25
and whoever picks up any of their carcasses shall wash his clothes and be unclean until evening.
Leviticus 14:9
It will be on the seventh day that he shall shave off all his hair: he shall shave his head and his beard and his eyebrows, even all his hair. He shall then wash his clothes and bathe his body in water and be clean.
Leviticus 15:13
‘Now when the man with the discharge becomes cleansed from his discharge, then he shall count off for himself seven days for his cleansing; he shall then wash his clothes and bathe his body in running water and will become clean.