Midrash sur Ketoubot 1:12

Rabbi José said: From whom do we learn of the seven days of banquet? From our father Jacob. For when our father Jacob married Leah, he made a banquet with rejoicing for seven days, as it is said, "Fulfil the week of this one" (Gen. 29:27).

When they came to the Cave of Machpelah, Esau came against them || from Mount Horeb to stir up strife, saying: The Cave of Machpelah is mine. What did Joseph do? He sent Naphtali to subdue the constellations, and to go down to Egypt to bring up the perpetual deed which was between them, therefore it is said, "Naphtali is a hind let loose" (Gen. 49:21). Chushim, the son of Dan, had defective hearing and speech, and he said to them: Why are we sitting here? He was pointing (to Esau) with his finger. They said to him: Because this man will not let us bury our father Jacob. What did he do? He drew his sword and cut off Esau's head with the sword, and took the head into the Cave of Machpelah. And they sent his body to the land of his possession, to Mount Seir.