Leviticus 14:40

Then the priest shall command that they take away the stones in which the plague is, and they shall cast them into an unclean place without the city:

Cross-reference

Leviticus 6:11 similarly directs carrying ashes outside the camp, following the same pattern of removing impurity.

1 Corinthians 5:13 directly commands 'purge the evil person from among you,' mirroring the removal of unclean stones from the camp.