Ramayana
ततो निश्चित्य मथनं योक्त्रं कृत्वा च वासुकिम् । मन्थानं मन्दरं कृत्वा ममन्थुरमितौजसः ॥ १-४५-१८
Deciding upon to churn the Milky Ocean, then made Vasuki ( Thousand-headed, King of Snakes ) as the churning rope and Mt. Mandara as stirrer and those brothers whose energy was unlimited started churning the Milky Ocean thoroughly. ॥ 1-45-18॥
english translation
tato nizcitya mathanaM yoktraM kRtvA ca vAsukim । manthAnaM mandaraM kRtvA mamanthuramitaujasaH ॥ 1-45-18
hk transliteration by Sanscript