Genesis 49:31-33

"There they buried Abraham and Sarah his wife; there they buried Isaac and Rebekah his wife; and there I buried Leah: the field and the cave that is therein, which was purchased from the children of Heth. And when Jacob made an end of charging his sons, he gathered up his feet into the bed, and yielded up the ghost, and was gathered unto his people."

Only here, in the Bible, do we learn that Jacob had buried Leah in Machpelah, but nothing is said as to WHEN the event occurred. It is possible that it happened even before Jacob went down into Egypt, but all such guesses are merely speculation. The actual burial took place as Jacob requested and is next related in the sacred text.

"Gathered up his feet into the bed ..." This expression indicates that after Jacob finished blessing his sons, he took his feet up from the floor where he had been sitting on the bed and folded himself up in bed, assuming, in all probability, the fetal position that is naturally characteristic of one in the process of dying. The knees are drawn under the chin, and the body takes on something of the position occupied within the womb of the mother. This is an indication that Jacob died shortly after speaking these words.