וְלָקַ֧ח הַכֹּהֵ֛ן מַ֥יִם קְדֹשִׁ֖ים בִּכְלִי־חָ֑רֶשׂ וּמִן־הֶֽעָפָ֗ר אֲשֶׁ֤ר יִהְיֶה֙ בְּקַרְקַ֣ע הַמִּשְׁכָּ֔ן יִקַּ֥ח הַכֹּהֵ֖ן וְנָתַ֥ן אֶל־הַמָּֽיִם׃
And the priest shall take holy water in an earthen vessel; and of the dust that is on the floor of the tabernacle the priest shall take, and put it into the water.
Read halakhic rulings (Jewish law) on Numbers 5:17: and classical halakhic sources.