Abstrak
This study aims to reveal the level of Islamic obedience to the Fatwa of the Indonesian Ulama Council (MUI) in the Nanggro Aceh Darussalam Province, DKI Jakarta and Riau Province. Data collected using questionnaires and were filled in by 542 respondents. Data were analyzed using SPSS Version 20. The results showed that the level of adherence to the MUI fatwa was in the high category (score 38-55) as much as 80.1%. Even so by using a descriptive test, there are items that include Muslims who still do not hold fast to some MUI Fatwas namely Shia lessons need not be suspected because we must mature to see numbers in understanding Islamic teaching (mean=2.22), Qur'an 'an is complete as a law of Islamic Shari'a without the need for the hadith of the Prophet Muhammad (mean=2.22) and prayer with Muslims and non-Muslims can increase inter-religious harmony in Indonesia (mean=1.93).