| istinjaa' | Direct followers of Muhammad and their first few succeeding generations |
| as-salaf | Ritual impurities (why did we call them "ritual" impurities) |
| shaheed | A collective obligation upon the Muslims at large |
| wudhu | Washing the sites of the two major excretions on the living or the dead |
| najasa | On killed fighting in the path of Allah |
| fardh kifaya | Partial washing in preparation for prayer |