Genesis 37:23-25

When Joseph had come to his brothers, they stripped him of his [distinctive] long garment which he was wearing; Then they took him and cast him into the [well-like] pit which was empty; there was no water in it. Then they sat down to eat their lunch. When they looked up, behold, they saw a caravan of Ishmaelites [mixed Arabians] coming from Gilead, with their camels bearing gum [of the styrax tree], balm (balsam), and myrrh or ladanum, going on their way to carry them down to Egypt.