All religions have some truth in them, but none has the whole truth; all are created in time and finally decline and perish. Mahomed himself never pretended that the Koran was the last message of God and there would be no other. God and Truth outlast these religions and manifest themselves anew in whatever way or form the Divine Wisdom chooses.

The Integral Yoga: Sri Aurobindo's Teaching and Method of Practice (ed. Lotus Press, 1993) - ISBN: 9780941524766