SB 8.12.32
tasyanudhavato retas
caskandamogha-retasah
susmino yuthapasyeva
vasitam anudhavatah
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Just as a maddened bull elephant follows a female elephant who is able to conceive pregnancy, Lord Siva followed the beautiful woman and discharged semen, even though his discharge of semen never goes in vain.