Shiva Purana
दृष्ट्वा च तत्तपस्सेवां विस्मयं परमं ययुः ॥ तयोस्तदद्भुतं दृष्ट्वा समूचुर्भजनं वरम् ॥ २९॥
They were astonished to see his austerities and service Seeing this wonderful sight they exclaimed the best of worship.
english translation
dRSTvA ca tattapassevAM vismayaM paramaM yayuH ॥ tayostadadbhutaM dRSTvA samUcurbhajanaM varam ॥ 29॥
hk transliteration by Sanscript