Shiva Purana

siva.sh/siva-purana/kotirudra-samhita/12/51

सुप्रसन्नः शिवो जातः शिवा च जगदम्बिका।। धृतं तया च तल्लिंगं तेन रूपेण वै तदा ।। ५१ ।।

sanskrit

Śiva became delighted and so also Pārvatī, the mother of the universe. That phallus was held by her in that form then.

english translation

suprasannaH zivo jAtaH zivA ca jagadambikA|| dhRtaM tayA ca talliMgaM tena rUpeNa vai tadA || 51 ||

hk transliteration by Sanscript