The Holy Quran and hadiths as the most important Islamic religious texts have significant capacities in various fields of human knowledge which have been often neglected. Among the issues raised in this religious texts are some of architectural problems. One of these problems is quality of bedroom design. In this article, this problem will be probed by citing verses and hadiths to deduct bedroom design principles. These principles will be presented in four main areas, including location, geometry, light and color…..