The Meaning of the Testimony of Faith
First :The testimony of faith denies everyone and everything other than Allah, the Exalted, the attribute of divinity. All those other than Allah, such as the angels, the Prophets, and the rest of mankind, let alone the idols and the political regimes in the world, are not god nor do they deserve to be worshipped. Thus denial in this respect is not denial of the existence of the alleged gods, rather the denial of divinity which is attributed to them.
Second: The testimony of faith affirms and restricts divinity to Allah Alone. That is, the slave must believe Allah is the only true God, and dedicate accordingly no act of worship to other than Allah.
1- Divinity, the Oneness of Allah Who is singled out as the only true God having no partner to share His divine attributes, nor His domain. He is the One the as-Samadl.
2- Self-sufficiency. Allah stands in need of no one; He needs neither a helper nor a spouse or a son.
3- The capability of doing everything. There is nothing which frustrates His capability. He does anything He wishes without exhaustion or support. If He wills to do a thing, He only says to it, “Be” , and it is.