This app has been arranged with the biography of Prophet Muhammad (peace be upon him) and the four caliphs (nobijir jiboni). Worship to know about the biographies of the prophets. And it is obligatory for every believer to live according to what he has learned from all his biographies. The Prophet Muhammad (peace be upon him) is the last and greatest of the prophets and messengers. The biography of the Prophet (peace be upon him) as well as the biographies of the four caliphs (4 khalifa jivani)