We all know that the Shari'a is able to adapt, to some extent, to changing circumstances. Fatwas, namely, the answers of legal scholars addressed to them by various members of Muslim communities, have contributed significantly to the adaptability of the Shari'a. Through a long process that has been studied only in part, fatwas penetrate into the standard law and introduced local customs into it. Therefore, fatwas serve as a source for both the development of the Shari'a, and the daily life that gave rise to them. These two aspects of the fatwas will be studied during the course: What can we learn from them about the communities within which they came into being, and how were they introduced into the Shari'a and influence it.