Leviticus 11:32

11:32 Also, anything they fall on when they die will become unclean – any wood vessel or garment or article of leather or sackcloth. Any such vessel with which work is done must be immersed in water and will be unclean until the evening. Then it will become clean.

Leviticus 13:51

13:51 He must then examine the infection on the seventh day. If the infection has spread in the garment, or in the warp, or in the woof, or in the leather – whatever the article into which the leather was made – the infection is a malignant disease. It is unclean.

Leviticus 19:19

19:19 You must keep my statutes. You must not allow two different kinds of your animals to breed, you must not sow your field with two different kinds of seed, and you must not wear a garment made of two different kinds of fabric.