Natyashastra
ततोऽस्म्युक्तो भगवता योजयामृतमन्थनम् । एतदुत्साहजननं सुरप्रीतिकरं तथा ॥ २॥
Then I was instructed by the Lord, "Perform the Amṛta-manthana (churning of nectar), as it inspires effort and brings delight to the gods."
english translation
tato'smyukto bhagavatA yojayAmRtamanthanam । etadutsAhajananaM suraprItikaraM tathA ॥ 2॥
hk transliteration by Sanscript