Four Key Concepts of the Qur'an" elucidates these basic Qur'anic concepts Ilah, Rabb, Ibadah and Din in order to bring out fully the Islamic way of life, as distinct from other perspectives. This elaboration goes a long way in developing a sound understanding of the Qur'an. It also explains the man-God relationship in Islam, guiding Muslims on how to lead their lives in total surrender to Allah.