Shatnez

(19) You shall observe My laws. You shall not let your cattle mate with a different kind; you shall not sow your field with two kinds of seed; you shall not put on cloth from a mixture of two kinds of material.

they learn this from the first verse, which permits a mixture of diverse kinds of wool and linen in ritual fringes. As for the previous claim that in the opinion of the Rabbis the phrase “wool and linen” is not superfluous and therefore there is no cause to derive from the juxtaposed verses, the answer is as follows: If so, that no homiletical interpretation can be derived from this source, let the verse say only: You shall make fringes for yourself. Why do I need the expression “twisted fringes” (Deuteronomy 22:12)? Conclude from this that this phrase is free,,

GEMARA: The Gemara asks a question: Granted, it is permitted to send sewn clothes, as they are suitable for wearing. With regard to clothes that are not sewn as well, they are at least suitable for covering oneself. But in the case of clothes than contain diverse kinds, for what use are they suited?

(5) A Jewish non-believer, they are idol worshippers, or those who commit sins spitefully, even one who eats a neveilah, or wore Shatnez out of spite, he is an Apikores...