The Torah, “Leviticus” (Shemini), 11:1-11:3: And the Lord spoke to Moses and to Aaron, saying to them: “Speak to the children of Israel, saying: These are the creatures you may eat among all the animals on earth. Any animal that has a cloven hoof that is completely split into double hooves and which brings up its cud, that one you may eat.”
Beasts are called “Kosher” and are fit (with the same root in Hebrew) for consumption if they are completely cloven footed and chew cud. These signs symbolize the attributes of the spiritual world.
When we want to correct our desires, we first restrict them and then divide them into Galgalta Eynaim (GE) and AHP, into desires of bestowal and of receiving. This division is called Parsa (which also means hoof in Hebrew) and is symbolized by animals that have completely cloven hooves. In that state, GE are above the Parsa and AHP are below the Parsa.
The process of digesting the food and chewing the cud refers to the constant connection between Malchut and Bina and to the mutual cooperation between them: The raising of the desire to Bina in order to correct it and returning to Malchut again.
The human body is built according to the same principle. The most typical animal exemplifying the proper digesting of food is the cow. In contrast to animals that swallow food, cows are ruminants, they constantly chew the cud and regurgitate it.
From KabTV’s “Secrets of the Eternal Book” 1/22/14