The Sufi, as a Zoroastrian or a Parsi, looks toward the sun, and bows before the air, fire, water, and earth, recognizing the immanence of God in God's manifestation, taking the sun, moon, and stars as the signs of God. The Sufi interprets fire as the symbol of wisdom and the sun as the celestial light. The Sufi not only bows before them but also absorbs their quality. As a rule, in the presence of dervishes, a wood fire and incense burn continually.