Shiva Purana
वायुरुवाच ॥ तच्छ्रुत्वा प्राह स मुनिर्जपन्पञ्चाक्षरं मनुम् ॥ मन्यमानो धर्मविघ्नं प्राह तं कर्तुमागतम् ॥ २० ॥
Vāyu said:— On hearing that, the sage began to repeat the five-syllabled Mantra. He thought that Indra had come there to put obstacles in his holy rites and so said.
english translation
vAyuruvAca ॥ tacchrutvA prAha sa munirjapanpaJcAkSaraM manum ॥ manyamAno dharmavighnaM prAha taM kartumAgatam ॥ 20 ॥
hk transliteration by Sanscript