The first and most important of the pillars of Islam is the Shahadatain which means, the two testimonies. The first is to affirm one’s belief in Islamic monotheism. A Muslim must testify that there is no deity worthy of worship except Allah alone. When the Muslim states this fact, they are obligated to leave all false deities behind, and direct all forms of worship towards the almighty creator, Allah, Glorified and Most High.
With the second testimony, the Muslim states that Prophet Muhammad Ibn Abdullah is the messenger of Allah. By testifying to this fact, the Muslim is acknowledging that Prophet Mohammad was sent by Allah to mankind as His messenger with the final revelation, The Quran. With this affirmation, the Muslim is obligated to obey the Prophet, may Allah be pleased with him, in all matters concerning the faith.