4Q537 12:1 :והיך להוא בנינ[א‏ :
See the entire entry for hēḵ adv. how

4Q537 12:1 :כהנ]יהון להוון לבשין וטהורן [ידיהון‏ : the priest should be wearing ... while their hands are ritually pure
See the entire entry for ṭhwr adj. ritually pure