Shiva Purana
तत्त्वमस्यादिवाक्यैर्या बोध्यते परमेश्वरी ॥ अनन्तकोटिब्रह्माण्डनायिकायै नमो नमः ॥ ३८ ॥
Obeisance to the heroine of infinite universes known as the supreme goddess in the Mahāvākyas as Tattvamasi.
english translation
tattvamasyAdivAkyairyA bodhyate paramezvarI ॥ anantakoTibrahmANDanAyikAyai namo namaH ॥ 38 ॥
hk transliteration by Sanscript