A priest must not defile himself by going near a dead person. However, for a father, a mother, a son, a daughter, a brother, or an unmarried sister, he may do so,
Jewish Publication Society of America Version (JPS1917) - Ezekiel 44:25 >And they shall come near no dead person to defile themselves; but for father, or for mother, or for son, or for daughter, for brother, or for sister that hath had no husband, they may defile themselves.