Leviticus 7:8

8. The skin of the burnt offering This was a perquisite of the priest, to be kept or sold at his pleasure. Bishop Patrick suggests that Adam was the first priest who offered a burnt offering, and that the presentation of the skin to him by the Creator established the precedent here ratified by the ceremonial law. The same custom is found among pagans, whose priests superstitiously thought that by lying upon these skins they would be endowed with the gift of prescience. See Virgil’s AEneid, book vii, 7:86-95. The same superstition lingers to this day in the Highlands of Scotland.