bid'at: (pl. bida') heresy; false, disliked belief or practice that did not exist in the four sources of Islam but which has been introduced later as an Islamic belief or 'ibada in expectation of thawab (blessings) ; heresy.  Sunnat: 1- (when used alone) The Shari'at; 2- (when used together with the name Book) The hadith of the Prophet. 3- (when used together with the word Fard) Any action, word or thought liked and commanded by the Prophet.  Shari'at: (pl. of Shari'a) i) rules and commandments as a whole of the religion. ii) religion.  Haram: an action, word or thought prohibited by Allahu ta'ala.  halal: (act, thing) permitted in Islam.  Tasawwuf: (Islamic sufism as defined by Islam) knowledge and (after adapting oneself to fiqh) practice of the manners of the Prophet ('alaihi 's-salam) which strengthens iman, makes the practice of fiqh easy and provides one to attain ma'rifa; 'ilm at-tasawwuf. [See the book Maktubat by Ahmad al-Faruqi as-Sirhindi (rahmatullahi ta'ala 'alaih)].  ummat: (pl. of umma) the community, body of believers, of a prophet.