The sum and substance of Eeman and Islam 

Hadrat Tamim Dari narrated: The Messenger of ALLAH said, ‘Faith means sincerity of purpose and adherence.” We asked “Sincerity and adherence to whom?” He replied, To ALLAH, the Exalted, to His Book, to His Messenger, to the Chiefs and leader of Muslims and to the common people”. [Ma’arif -ul- Hadis, Muslim]