Agni Vayu

Once while he was touring Kumbakonam along with his wife, Sri Venkatanatha and his family were invited to attend a function. Unfortunately, the hosts did not treat him well and wanted him to earn his food by running a chore. So they asked him to make some sandalwood paste for all the invitees. Sri Venkatanatha per his habit was chanting stotras and mantras while preparing sandalwood for Tilaka. When the guests applied this paste, it induced a burning sensation all over their bodies. Surprised by this, the hosts sought a clarification from Venkatanatha. He replied that the burning sensation was due to the Agni Suktam (hymn for the worship as defined in the Esoteric Vedas) that he was chanting while preparing sandalwood and thus eternal power of Vedic Mantras revealed itself. This happens only when chanted with absolute dedication and devotion. The power is enhanced since it was chanted by someone as virtuous and devoted to Bhagwaan Hari as himself. Upon realizing his devotion and power, the host apologized profusely to Sri Venkatanatha and sought his forgiveness.

Sri Venkatanatha then prepared the paste again but chanted the Vedic Mantra to Varuna (Vedic rain gods) this time. It has been recorded that when the guests applied this paste, they were awash with a sense of being drenched in rainwater, reaffirming Sri Venkatanatha's power of devotion.