 As compared to other classical texts, this commentary seems to rely less on "Asbab al-nuzul" or reasons of revelation of verses.This approach greatly reduces the impact and validity of negative remarks and objections made on the Quran by non-Muslim critics.It deals particularly with such practical teachings of the Quran as pertain to moral and socio-political ideas and economic relations; and frequently comments upon verses with reference to the various theories and findings of what were then the newly emerging natural and social sciences of the 19th and early 20th centuries.