In Exodus 21:5-6; when a slave wanted to stay with his master, they would go to the judges, bore his ear through with an awl, and the slave would serve the master "forever."
21:5-6, hune ha pfi, arali phuli i sa funi u vhofhololwa nga muṋe wayo, muṋe wayo a i phule nḓevhe, tshi vhe tshiga tsha uri yo nanga vhupuli nga u takalela muṋe wayo. nda vha phuli yau tshoṱhe.