Shiva Purana
दीर्घसत्रं वितन्वन्तो रुद्रमध्वरनायकम् ॥ प्रीणयन्तः परं भावमैश्वर्य्यं ज्ञातुमिच्छवः॥ २६॥
They extended a long sacrifice to Rudra, the leader of the sacrifices. Pleasing the Supreme Being and desiring to know the opulence.
english translation
dIrghasatraM vitanvanto rudramadhvaranAyakam ॥ prINayantaH paraM bhAvamaizvaryyaM jJAtumicchavaH॥ 26॥
hk transliteration by Sanscript