Subsisting on air only surrounded by five sacred fires and engaged in meditation the tenheaded Ravana remained standing on one leg for a thousand years.
अतिष्ठदेकपादेन सहस्रं परिवत्सरान्। वायुभक्षो दशग्रीवः पञ्चाग्निः सुसमाहितः॥