Meaning of tauheed - The arabic word Tauheed is derived frm the word 'wahad' which means one literally means 'making oneness' . But in islamic terminology it means that oneness of allah.Tauheed is first nd foremost belief of islam unles a man believes in unity of allah he cannot be a true muslim.Tauheed is the basis of reliance on allah.A believer puts his complete trust in allah alone nd doesnt rely on any other thing or person.