Ismaili Tawil of the Qura'n
Ismailis make a fundamental distinction between aspect of religion, the zahir (exterior) and the batin (interior). The former aspect consist of exterior aspects, such as knowing the apparent meaning of the Quran and performing the obligatory acts as laid down in the sharia, the religious law. The latter aspect is comprised of knowing the hidden, inner, true meaning of the Qrua'n and the sharia. They further maintain that it is the natiq (lawgiver-prophet) who receives revelation (tanzil) and promulgates the sharia, while it is his associate and deputy, the wasi (plenipotentiary), who expounds the batin through the science of ta'wil. The zahir, therefore, varies from prophet to prophet in accordance with each epoch, whereas the batin remains unchanged and is universally valid. Despite this twofold division of religion into exoteric and esoteric aspects, Ismailis stress that both are not only complementary to each other, but that they are also intertwined with each other like body and soul. One without the other, therefore, cannot exist.
Ismaili Tawil of the Quran. (Scanned PDF).