Shiva Purana
शिवशक्तिसमायोगः परमात्मेति निश्चितम्॥ पराशक्तेस्तु संजाता चिच्छक्तिस्तु तदुद्भवा ॥ ५४ ॥
The combination of the powers of Shiva is certainly the Supreme Self. The power of the Supreme is born of the power of the mind and the power of the mind is born of it.
english translation
zivazaktisamAyogaH paramAtmeti nizcitam॥ parAzaktestu saMjAtA cicchaktistu tadudbhavA ॥ 54 ॥
hk transliteration by Sanscript