Shiva Purana
वायुरुवाच ॥ न ह्येष शिशुकः कश्चित्प्राकृतः कृतवांस्तपः ॥ मुनिवर्यस्य तनयो व्याघ्रपादस्य धीमतः ॥ ४ ॥
Vāyu said:— It was not an ignorant common infant who performed the penance. He was the son of a great, wise and the learned sage Vyāghrapāda.
english translation
vAyuruvAca ॥ na hyeSa zizukaH kazcitprAkRtaH kRtavAMstapaH ॥ munivaryasya tanayo vyAghrapAdasya dhImataH ॥ 4 ॥
hk transliteration by Sanscript