כִּ֤י אִם־תְּכַבְּסִי֙ בַּנֶּ֔תֶר וְתַרְבִּי־לָ֖ךְ בֹּרִ֑ית נִכְתָּ֤ם עֲוֺנֵךְ֙ לְפָנַ֔י נְאֻ֖ם אֲדֹנָ֥י יְהוִֽה׃
即使你用鹼水洗濯，又多用皂草，你罪孽的污跡仍然顯在我面前。這是主永恆者說的。
Mishnah Kelim
Vessels of wood, vessels of leather, vessels of bone or vessels of glass: If they are simple they are clean If they form a receptacle they are unclean. If they were broken they become clean again. If one remade them into vessels they are susceptible to impurity henceforth. Earthen vessels and vessels of sodium carbonate are equal in respect of impurity: they contract and convey impurity through their air-space; they convey impurity through the outside but they do not become impure through their backs; and when broken they become clean.