Shiva Purana
वायुरुवाच ॥ एवं लब्ध्वा परां शक्तिमीश्वरादेव शाश्वतीम् ॥ मैथुनप्रभवां सृष्टिं कर्तृकामः प्रजापतिः ॥ १ ॥
The wind said. Having thus obtained from the Supreme Lord eternal power, The creator, desiring to create the sexually active, created the universe.
english translation
vAyuruvAca ॥ evaM labdhvA parAM zaktimIzvarAdeva zAzvatIm ॥ maithunaprabhavAM sRSTiM kartRkAmaH prajApatiH ॥ 1 ॥
hk transliteration by Sanscript