The Brahmana of pure practices who lives on water only, and performs the Agnihotra continually, and recites the Gayatri, acquires a kingdom. By abstaining from food or by restricting it, one acquires residence in heaven.
सलिलाशी भवेद् यस्तु सदाग्निः संस्कृतो द्विजः। मनुं साधयतो राज्यं नाकपृष्ठमनाशके॥