A Russian Sister Accepted Islam After Her Questions Were Convincingly Answered By Dr. Zakir Naik. Qur’an is Final word of GOD. Prophet Mohammed (SAW) is the seal of all Prophets. And Dr. Zakir Naik proves it from Bible itself. Islam is pure monotheism and way of Life of all Prophets from Prophet Adam (PBUH) to seal of all Prophets, Prophet Mohammed (صلى الله عليه وآله وصحبه وسلم).