The only reference I have for Imam Malik's saying is Al-I'tisam by Imam Shatibi The quotes from Mujaddid are from a number of sources including the one you mentioned. There is no-one that can deny the linguistic usage of the word bi'dah hasanah. Even the Salaf used the word bid'ah in its linguistic usage as demonstrated here: http://www.sunniforum.com/forum/show...l=1#post740227 The Mujaddid refers several times to innovation in the Deen, which is the definition of legal bid'ah.