Shiva Purana

siva.sh/siva-purana/uma-samhita/45/3

परब्रह्म महेशस्य शक्तिराद्या सनातनी ।। उमा या समभिख्याता त्रैलोक्यजननी परा ।। ३।।

sanskrit

The first primordial Śakti of Śiva the great Brahman, who is called Umā, is the great mother of the three worlds.

english translation

parabrahma mahezasya zaktirAdyA sanAtanI || umA yA samabhikhyAtA trailokyajananI parA || 3||

hk transliteration by Sanscript