Matsya Purana 234.7

234.7

japtavyā vāruṇā mantrāstaiśca homo jale bhavet .. 234.6 ..

Garga said :—If rivers lakes, or cascades advance close to the town or recede to a great distance away from it, and if the waters of the tanks and streamlets, etc., become tasteless and if the water of the rivers turns warm dark of an unnatural colour and full of froth and sand if it turns milky, oily, winy, or bloody, the empire where such things happen is bound to pass into the hands of another sovereign within six months from the time of such happenings. When reservoirs make unusual noise, and kindle up, or look as if smoke, fire and dust are coming out of them or water suddenly springs up, without there being dug a well or so, or a multitude of beings plunge into water, and when all the reservoirs begin to produce musical sounds, there is always a great danger of dreadful epidemics. To avert the calamity, Ganges water or other holy water, clarified butter, honey and oil should be poured into the waters and the head should be turned on the mantra sacred to Lord Varuṇa and sacrificial offerings should be performed in the water.—1-6.