 सप्तरात्रकृताहारा वायुनाचलवासिनः।दिवं वर्षशतैर्याताः सप्तभिः सकलेबर।। 
 These seven sages used to live on air and that too once in seven nights. They lived for seven hundred years performing penance with motionlessness and attained heaven along with their bodies. 