Shiva Purana
तस्मादात्मन एवेदं रूपमित्येव निश्चितम् ॥ प्रपंचार्थं प्रवक्ष्यामि प्रणवै क्यप्रदर्शनम् ॥ ५१ ॥
Hence these are the features of the Ātman alone. I shall now explain then meaning of the creation indicating the identity with the Praṇava.
english translation
tasmAdAtmana evedaM rUpamityeva nizcitam ॥ prapaMcArthaM pravakSyAmi praNavai kyapradarzanam ॥ 51 ॥
hk transliteration by Sanscript