The work deals with stepwise percolation of Islam in Indonesia vis-à-vis reaction of Indonesian societies which have primarily been seasoned in mix culture of Animism, Buddhism, Hinduism and other pre-existing tradition which they proudly call it as adaat. Islam being the major religion, religious forces have long been trying to enforce it in the political system of the country bringing modern pan-Islamic ethos by taking inspiration from Iranian Revolution to establish shariah as the basis of Indonesian Constitution ignoring the Pancasila, the basis of present Constitution of Indonesia. Islam as compared to other pan-Islamic countries has never been a fundamental basis of the lives of Indonesian people. However as a major political tool and various charities coming from outside Muslim world, few political parties have been able to generate more supports from Indigenous people to support the cause of establishing Indonesia as an Islamic state. ukryj opis