The laws against mixing seed, animals in yoke, and fibers in clothing ( Deuteronomy 22:9-11) may have had a double significance. They taught the Israelites the importance of purity and keeping things distinct "... because the order of the world must not be endangered." [1] They may have also illustrated the importance of remaining separate from the Canaanites (cf. 2 Corinthians 6:14-18). Oxen and donkeys would have not been a good combination when yoked together because they would pull at different rates. Wool was the fiber from which the Israelites made their clothing. However the Canaanites, especially the Canaanite priests, dressed in linen. [2] Tassels ( Deuteronomy 22:12) were also visual aids (cf. Numbers 15:37-41). [source][source][source]
"One of the ways the purity of the people is to be maintained, one that sounds rather strange in the contemporary world, is the insistence that things be kept in order and not mixed up inappropriately." [3][source]