Dear Brother Sidqi, As-salaamu-Alaykum.
Prophet Muhammad (s) was only person in world who was “most extremely successful in both secular and religious levels”. Hence, early Muslims made great contribution to maths, science, medicine, business, politics, etc, and ruled the world for nearly 1000 years.
They could not have achieved this if they did not know how to eliminate the dichotomy of the secular and religious and all extremists and fundamentalists teachings and practices that made them separate and exclusive.
Can you tell me how they could have achieved this without the Creeds of Abraham?
AK Sayed (South Africa).