The meaning of impurity

1. We were told by my father, and Muhammed bin Hasan bin Ahmad bin Waleed, may Allah be pleased with them both, that they both said: We were told by Abdullah bin Ja’far al-Himyari, from Muhammed bin Hussain bin Abi’l-Khattab, that he said: We were told by Nadr bin Shu’aib, from Abdul-Ghaffar al-Jazi, from Abu Abdillah, peace be upon him, with regards to the saying of Allah, Exalted and Glorious is He: «Allah only wants, verily, to remove from you impurity, (O) Household, and to purify you a (complete) purification.» (33:33) He said