The Shahaadah (Testimony of Faith)

The Shahaadah (Testimony of Faith) – Meaning & Conditions – Dr. Saleh as Saleh

This is the first principle in the belief in Tawheed (Oneness and Uniqueness of
Allaah). Allaah is One in His Lordship, One in His Godship and One and Unique in
His Actions and Names and Attributes. Nothing is like Allaah. When someone
accepts Allaah as the only true God Who deserves to be worshipped, then he must negate all worship to anyone (or anything) other than Allaah. This is the meaning of laa ilaaha illal-laah: “There is no true God but Allaah.” It is composed of negation and affirmation statements. The statement “but Allaah” confirms that Allaah is the only true God Who deserves to be worshipped.

Dr. Saleh as Saleh 

The Shahaadah – Testimony of Faith – by Saleh As-Saleh [PDF]