Chabad Knowledge Base
(sciatic nerve): Consumption of the sciatic nerve is biblically forbidden, to commemorate Jacob’s victory over an angel after they wrestled all night. The angel dislodged Jacob’s sciatic nerve.
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Entry for 'Gid Hanasheh'. Chabad Knowledge Base. https://www.studylight.org/dictionaries/eng/ckb/g/gid-hanasheh.html. 2012.