Shiva Purana
सागरत्वं च लेभे स कर्मणा तस्य तेन वै॥ तं चाश्वमेधिकं सोऽश्वं समुद्रादुपलब्धवान्॥ ५६॥
By that virtue he attained the fatherhood of ocean. He regained the sacrificial horse from the ocean.
english translation
sAgaratvaM ca lebhe sa karmaNA tasya tena vai॥ taM cAzvamedhikaM so'zvaM samudrAdupalabdhavAn॥ 56॥
hk transliteration by Sanscript