O great king, Uttanka performed serverest asceticism. In order to secure the grace of Vishnu that lord (Uttanka) performed that severest penance for many hundreds of years.
उत्तङ्कस्तु महाराज तपोऽतप्यत् सुदुश्चरम्। आरिराधयिषुर्विष्णुं बहून् वर्षगणान् विभुः॥