Chapter on Etiquettes of Causes Requiring Purification

Narrated to me by the Shaykh (Al-Mufid), may Allah سبحانه وتعالى support him, from Abu Al-Qasim Ja'far bin Muhammad, from Muhammad bin Ya'qub, from Muhammad bin Isma'il, from Al-Fadl bin Shadhan, from Safwan, and Ali bin Ibrahim, from his father, from Hammad bin Isa, all of them from Mu'awiyah bin Ammar, who said: I heard Abu Abdullah عليه السلام say: 'If the water is equal to a kurr, nothing can make it impure.'