Shiva Purana
ॐ मितीदं सर्वमिति श्रुतिराह सनातनी ॥ ओमिति ब्रह्म सर्व्वं हि ब्रह्मेति च समब्रवीत् ॥ ४९॥
The eternal Śruti says, “Verily all this is Om; Om is Brahman. Everything is Brahman.”
english translation
OM mitIdaM sarvamiti zrutirAha sanAtanI ॥ omiti brahma sarvvaM hi brahmeti ca samabravIt ॥ 49॥
hk transliteration by Sanscript