The Mosaic Law touched on such matters as the disposal of waste, the cleansing of vessels, and the washing of hands, feet, and clothing.
عَلَى نَحْوٍ مُمَاثِلٍ ،‏ يُرِيدُ يَهْوَه أَنْ نَكُونَ طَاهِرِينَ .‏