Tauheed, also known as divine unity is the basic faith of Islam. The building of Islam is standing on the faith of Tauheed, it is just like the base of the building of Islam. Tauheed means believing in oneness of Allah Almighty. Most extended theory of Tauheed include that everything from kith to kin originate from Allah.
By accepting Tauheed, we believe that Tauheed is fundamental part of our life, And that there is no other supreme power except Allah. We can say entire religion is hidden inside the phrase of Tauheed. According to Lisan ul Arab by Ibn e Mandhoor, Tauheed means “to make something one, or to assert oneness of something”. It is very necessary that we not just stick to the phrase of Tauheed but should try to enter into the soul of word Tauheed.