Shiva Purana
प्रजासृष्टिश्च विप्रेंद्रा मैथुनेन प्रवर्तते ॥ ब्रह्मापि प्राप सानन्दं सन्तोषं मुनिपुंगवाः ॥ २६ ॥
O leading brahmins, procreation functions through copulation. O leading sages, Brahmā too was satisfied.
english translation
prajAsRSTizca vipreMdrA maithunena pravartate ॥ brahmApi prApa sAnandaM santoSaM munipuMgavAH ॥ 26 ॥
hk transliteration by Sanscript