Shiva Purana
संभाव्य मायया युक्तस्तत्र सुप्तो हरिस्स वै ॥ नारायणेति विख्यातः प्रकृतिर्नारायणी मता ॥ ५ ॥
Viṣṇu famous as Nārāyaṇa slept there enveloped by Māyā. The Prakṛti is known as Nārāyaṇī (belonging to Nārāyaṇa.)
english translation
saMbhAvya mAyayA yuktastatra supto harissa vai ॥ nArAyaNeti vikhyAtaH prakRtirnArAyaNI matA ॥ 5 ॥
hk transliteration by Sanscript