The image of God during the time of Seljuk Empire and Ottoman Empire was mostly influenced by the concept later known as "Wahdat al-wujud". The concept is usually traced back to the Andalusian shaikh and mystic ibn Arabi. But the idea probably originated 200 years earlier as a result of Turkic cosmology in Turkistan. In this place the first taqira, the Yesevi-tariqa derived from, which had great impact on Haji Bektash Veli. He had significant influence on the understanding of Islam among Turks in Anatolia. The expression itself was used only after the disciples of Ibn Arabi.