Shiva Purana

siva.sh/siva-purana/uma-samhita/49/28

परं ब्रह्म परं ज्योतिः प्रणवद्वन्द्वरूपिणी ।। अहमेवास्मि सकलं मदन्यो नास्ति कश्चन ।। २८ ।।

sanskrit

The great Brahman, the great light in the form of the two Praṇavas, I alone am. I am all. There is none other beside me.

english translation

paraM brahma paraM jyotiH praNavadvandvarUpiNI || ahamevAsmi sakalaM madanyo nAsti kazcana || 28 ||

hk transliteration by Sanscript