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.

Leviticus 26:16

26:16 I for my part will do this to you: I will inflict horror on you, consumption and fever, which diminish eyesight and drain away the vitality of life. You will sow your seed in vain because your enemies will eat it.