Leviticus 2:13

2:13 Moreover, you must season every one of your grain offerings with salt; you must not allow the salt of the covenant of your God to be missing from your grain offering – on every one of your grain offerings you must present salt.

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.