What is faith (Iman) in Islam?
It is belief in the Unity of God or Tawheed. This is expressed in the primary Kalimah (Word) of Islam as: “Laa ilaaha illallaah", meaning: “There is no one worthy of worship but Allah.”
This beautiful phrase is the bedrock of Islam, its foundation and its essence. It is the expression of this belief, which differentiates a true Muslim from an unbeliever, or one who associates others with God in His Divinity.