Eight classes of injunctions and prohibitions

There are eight classes of injunctions and prohibitions which apply to all deeds and actions of mankind. The various types of prayers which we will be discussing later also fall into one or another of these categories of rulings. Thus, we will first review their definitions here before continuing farther. The eight categories are:  (1) Farḍt (2) W'ajib (3) Sunnah (4) Mustahab (5) Mub'ah (6) Makrûh Tanz'ihi (7) Makrûh Tahhr'imi, and (8) Hhar'am. [Taken from Kitaabu-s-Salaaht] ......