Cross reference
Deuteronomy 22:11
11 `Thou dost not put on a mixed cloth, wool and linen together.
Leviticus 19:19
19 `My statutes ye do keep: thy cattle thou dost not cause to gender `with' diverse kinds; thy field thou dost not sow with diverse kinds, and a garment of diverse kinds, shaatnez, doth not go up upon thee.