Shiva Purana
इत्येवं प्रार्थितस्तेन पञ्चवक्त्रधरो ह्यहम् ॥ पञ्चाक्षराणि क्रमशः प्रोक्तवान्पद्मयोनये ॥ २९ ॥
Thus requested by him, I who had assumed five faces, mentioned the five syllables, to the lotus-born one.
english translation
ityevaM prArthitastena paJcavaktradharo hyaham ॥ paJcAkSarANi kramazaH proktavAnpadmayonaye ॥ 29 ॥
hk transliteration by Sanscript