Leviticus 8:31-33

31Moses then said to Aaron and his sons, “Cook the meat at the entrance to the tent of meeting and eat it there with the bread from the basket of ordination offerings, as I was commanded: ‘Aaron and his sons are to eat it.’

32Then burn up the rest of the meat and the bread.

33Do not leave the entrance to the tent of meeting for seven days, until the days of your ordination are completed, for your ordination will last seven days.