As-Salik posts an explanation by Mufti Taqi Usmani of Pakistan of the terms mujaddid and tajdeed. He talks about what characterizes these scholars, the hadith about one appearing every century, and what status they are accorded.
[Also], the hadith quoted above, while foretelling the appearance of mujaddids in every century, does not intend to make it compulsory to recognize such mujaddids. It is rather a consolation for the Muslims of the coming generations that, despite all the distortions or innovations which may creep into the Muslim society, the ummah shall not be deprived of the pious persons who shall never be influenced by such distortions, and who shall follow the original teachings of the Holy Qur’an and Sunnah and invite the people to this respect. The Muslims of the coming generations are, therefore, directed by this hadith to follow only those persons who dwell upon the original teachings of the Holy Qur’an and Sunnah and refuse to follow the un-Islamic customs, beliefs and practices which have not been derived from these original holy resources.
Image coutresy: mypanda