Srila Sanatana Gosvami was practicing bhajana near the Yamuna River at Kaliya-hrada, the former abode of the very poisonous snake named Kaliya. Kaliya-hrada was close to the Yamuna, and therefore its surrounding area was full of sand. Srila Sanatana Gosvami wore only a loincloth. He used to go begging door-to-door for a small amount of prasada (Krsna’s food remnants), and would take as his meal only one dry chapatti (flat bread), with no salt.
The brahmana arrived at his cottage and told him, “I went to Sankara Mahadeva, Lord Siva, and he told me to meet you. He said you will give me some wealth for my daughter’s marriage.” Sanatana Gosvami replied, “I have no possessions. You can see that I have nothing but a loincloth.” Then he thought, “Oh, Siva cannot tell a lie. He is my bosom friend.” Thinking of Lord Siva and contemplating further, he remembered a touchstone he had once disgarded and then forgotten. Now he told the brahmana, “Go to the Yamuna and remove some of the sand, and there you will find a touchstone. It is somewhere in the sand, though I don’t remember where.”