Deuteronomy 22:10, You shall not plow with an ox and with a donkey (that is, a kosher animal with a non-kosher animal). Baal Ha Turim interprets this verse to mean that a righteous person should not enter into a business partnership with a wicked person. The Mishnah states: “Distance yourself from a bad neighbor; and do not bind yourself to a wicked person (Avos 1:7, The ArtScroll Baal HaTurim Chumash, p. 2065).
What does the Testimony of Yeshua say about being unequally yoked? (See 1 Cor 15:33; 2 Cor 6:14.)