Then shall the priest command to take for him that is to be cleansed two birds alive and clean, and cedar wood, and scarlet, and hyssop:
For in six days the LORD made heaven and earth, the sea, and all that in them is, and rested the seventh day: wherefore the LORD blessed the sabbath day, and hallowed it.Exodus 20:11 KJV
And the priest shall command that one of the birds be killed in an earthen vessel over running water:Leviticus 14:5 KJV
And the priest shall go forth out of the camp; and the priest shall look, and, behold, if the plague of leprosy be healed in the leper;Leviticus 14:3 KJV