Perform abhisheka (ceremonial bath given to the Deity) to the Atma-linga (the Divine within), with the waters of your own pure mental impulses (Chittha-vritthi). What is true yajna (ceremonial sacrifice)? Giving in charity accumulated wealth is Dravya yajnam. When all physical and mental activities are utilised for sadhana (spiritual discipline) it is Thapo yajna. Doing karma (action) but yet remaining unbound by it, is Yoga Yajna. When the chittha (mind) moves in one direction and the indriyas (sense organs) move in another, the person is doubly confused. So keep attachment afar. When you accomplish this, every act of yours becomes a sacrifice (Yajna). Whatever you speak becomes a holy mantra; and the place where you plant your foot is rendered holy.(Geetha Vahini, Ch 10)