It is mentioned in The Tanach that Jacob fought with an angel who could not beat him. At the end of the fight, the angel strikes a nerve in Jacob's leg, causing him to limp. The verse then states: "Therefore the Israelites do not eat the displaced nerve (gid ha-nasheh) on the hip joint to this very day." (Genesis 32:33)
Some people claim that without the Oral Torah, all that we can get from the story of Jacob in Genesis 32, is that Israelites avoiding the gid hanasheh was merely a custom, they just decided to do so, God never issued a law in the tanakh, regarding consuming Gid hanasheh.
is their reading right?
Another question : Was the Rabbis'Halakha regarding the prohibition of gid hanasheh, should be equally respected, and treated as inspired from God, as all other laws with regard to non-sacred animals, etc that are mentioned in the Tanakh? or may be their prohibition of gid hanasheh was an error that has no basis on the tanakh.