كتاب التوحيد

Monotheism is the right of God that is obligatory on slaves, and it is the greatest command of religion, and it is the greatest command of God in it, and it is the origin of all the principles and the basis of business.

The author, may God have mercy on him, was keen to give a clear picture of all types of monotheism, especially the monotheism of divinity and the greater and lesser polytheism against it. Its causes, its fruits, its requirements, and what it increases, strengthens or weakens, and distorts it, and its contents are completed and completed.
Monotheism is the recognition of the Lord's unique attributes of perfection and the recognition of His unification with the attributes of greatness and majesty and His individuals alone by worship.