And what compiles this Tawheed is a simple word that is easy to pronounce, but vast in its meaning and tremendous in its extent. It is the phrase “Lâ Ilâha Illa Allâh” which means: “There is no deity that has the right to be worshiped, but Allâh”. It is the phrase of testimony and the key to the home of happiness. It is the foundation of this religion and its basis. It is the most important factor of this religion, the trunk of its tree and the pillar of its canopy, the rest of the pillars and obligations that erupt from it are its branches and its complements that are confined with adhering to its meaning [the testimony] and applying its prerequisites.