Shiva Purana

siva.sh/siva-purana/saturda-samhita/11/40

प्रकृतिस्त्वं पुमान्रुद्रस्त्वयि वीर्य्यं समाहितम् ।। त्वन्नाभिपङ्कजाज्जातः पञ्च वक्त्रः पितामहः ।। ४० ।।

sanskrit

You are Prakṛti and Rudra is Puruṣa. The semen is deposited in you. The five-faced Brahmā was born of your umbilical lotus.

english translation

prakRtistvaM pumAnrudrastvayi vIryyaM samAhitam || tvannAbhipaGkajAjjAtaH paJca vaktraH pitAmahaH || 40 ||

hk transliteration by Sanscript