Shiva Purana

siva.sh/siva-purana/uma-samhita/49/29

निराकारापि साकारा सर्वतत्त्वस्वरूपिणी ।। अप्रतर्क्यगुणा नित्या कार्यकारणरूपिणी ।। २९ ।।

sanskrit

Though devoid of form I possess forms. I constitute all principles. I am eternal and my attributes cannot be disputed. I am both the cause and the effect.

english translation

nirAkArApi sAkArA sarvatattvasvarUpiNI || apratarkyaguNA nityA kAryakAraNarUpiNI || 29 ||

hk transliteration by Sanscript