Deuteronomy 14:6
And every beast that parteth the hoof, and cleaveth the cleft into two claws, and cheweth the cud among the beasts, that ye shall eat. And every beast that parteth the hoof, and cleaveth the cleft into two claws, and cheweth the cud among the beasts, that ye shall eat.
The verse belongs to God's instructions in Deuteronomy 14:3-20 identifying which beasts may be eaten and forbidding unclean animals. A beast may be eaten only if it both parts the hoof and cleaves the cleft into two claws and chews the cud. The animals it bars as unclean include swine and certain other beasts.
The rule was not an arbitrary exercise of authority but was given to preserve life and health, specifying the animals least objectionable for food. The flesh of the excluded animals tends to make the blood impure and shorten life. Its positive aim is to keep the blood pure by simple, healthful food so that mind and body retain their powers. Religious leaders distorted these directions about uncleanness by adding extreme, trivial external demands, such as straining water to remove even tiny insects.