Leviticus 6:28

But the vessel of earth in which the flesh was cooked is to be broken; or if a brass vessel was used, it is to be rubbed clean and washed out with water.

Leviticus 11:33

And if one of them gets into any vessel of earth, whatever is in the vessel will be unclean and the vessel will have to be broken.

Leviticus 15:12

And any vessel of earth which has been touched by the unclean man will have to be broken and any vessel of wood washed.

Hebrews 9:9-10

And this is an image of the present time; when the offerings which are given are not able to make the heart of the worshipper completely clean,

Treasury of Scripture Knowledge

Summary

But the earthen vessel wherein it is sodden shall be broken: and if it be sodden in a brasen pot, it shall be both scoured, and rinsed in water.

Bible References

General references

Leviticus 11:33
And if one of them gets into any vessel of earth, whatever is in the vessel will be unclean and the vessel will have to be broken.
Leviticus 15:12
And any vessel of earth which has been touched by the unclean man will have to be broken and any vessel of wood washed.
Hebrews 9:9
And this is an image of the present time; when the offerings which are given are not able to make the heart of the worshipper completely clean,

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain