Two hips, two nerves, two types of mitzvos[1]
וירא כי לא יכל לו ויגע בכף ירכו ותקע כף ירך יעקב בהאבקו עמו: על כן לא יאכלו בני ישראל את גיד הנשה וגו’ כי נגע בכף ירך יעקב בגיד הנשה
[The angel] saw that he could not overcome [Yaakov], so he touched the socket of his hip, and he dislodged the socket of Yaakov’s hip in his wrestling with him. Therefore, the Jewish people do not eat the sciatic nerve…for [the Angel] touched the socket of the hip of Yaakov, in his sciatic nerve[2]
One of the more famous episodes of the Bible is the wrestling match between Yaakov and the Angel. The Torah describes him as an unknown man who attacked Yaakov unprovoked, and our Sages tell us[3] this was the guardian Angel of Eisav, Yaakov’s brother. Yaakov was able to hold his own, so the Angel decided to fight dirty and dislocate Yaakov’s hip socket. In doing so, he affected Yaakov’s sciatic nerve. The Torah then testifies that this is the reason why it is forbidden for Jews to consume the sciatic nerve.