The world is a manifestation of the light, which was incarnated in Adam, the prophets and the Aqṭāb.[16] Ibn al-Arabi wrote, "The creation began with nūr Muhammad. The lord brought the nūr from his own heart."[17] The Persian poet and Sufi theoretician Fariduddin Attar (c. 1145–1221) wrote, "The origin of the soul is the absolute light, nothing else. That means it was the light of Muhammad, nothing else."[18]