All the priests and Levites had purified themselves and were ceremonially clean. And the Levites slaughtered the Passover lamb for all the exiles, for their priestly brothers, and for themselves.
Jewish Publication Society of America Version (JPS1917) - Ezra 6:20 >For the priests and the Levites had purified themselves together; all of them were pure; and they killed the passover lamb for all the children of the captivity, and for their brethren the priests, and for themselves.