This document discusses the four principles of Tawheed (monotheism) according to Shaykh Muhammad ibn ‘Abdul-Wahaab. It defines Tawheed ar-Ruboobiyyah as singling out Allah as the sole creator and sustainer of all things. Tawheed al-Uloohiyyah is defined as singling out Allah alone for all acts of worship. Examples of each type of Tawheed are provided from the Quran and hadiths. The document stresses that the purpose of creation is to worship Allah alone without any partners. Associating any form of worship to other than Allah constitutes shirk.