Genesis 37:23

37:23 When Joseph reached his brothers, they stripped him of his tunic, the special tunic that he wore.

Genesis 37:31-32

37:31 So they took Joseph’s tunic, killed a young goat, and dipped the tunic in the blood. 37:32 Then they brought the special tunic to their father and said, “We found this. Determine now whether it is your son’s tunic or not.”