The brick on which Lord Vitthal is standing is the basic chakra of Kundalini energy known as Muladhara Chakra. Both hands, like bows, represents Ida and Pingla nadis which cross over at the central body of Sushumna or Brahma nadi. Body represents purusha means Vishnu or Krishna and the tilaka or the mark on the head represents Ajna Chakra or guru chakra or third-eye chakra is the subtle center of energy, believed to be located between the eyebrows, located behind it along the subtle (non-physical) spinal column, as said by Lord Krishna in Bhagavad Gita.