This article aims to discuss the purpose of riba (usury) prohibition within The Prophet Tradition perspective. As it is known undoubtfully, the terminology of riba (usury) is forbidden not only in Islam as a religion but also in Jew as well as Christian. In Al-Qur’an itself, the prohibition of riba has gradually been prohibited, at least through four passages that are found in four disparate surahs in which riba (usury) at last is forbidden and condemned; even it is also considered as a great sin. By using bibliography studies, this article would like to dig and elaborate on some of the Prophet hadith regarding the prohibition of riba and its impact within society. It is believed that riba is a great sin in Islam because it leads to social ...