Genesis 37:23-25

So when Joseph arrived, his brothers ripped off the beautiful robe he was wearing. Then they grabbed him and threw him into the cistern. Now the cistern was empty; there was no water in it. Then, just as they were sitting down to eat, they looked up and saw a caravan of camels in the distance coming toward them. It was a group of Ishmaelite traders taking a load of gum, balm, and aromatic resin from Gilead down to Egypt.