amṛtārthe kurūdvaha

sri-sukah uvaca-Sri Sukadeva Gosvami said; te-all of them (the demigods and the demons); naga-rajam-the king of the Nagas, snakes; amantrya-inviting, or requesting; phala-bhagena-by promising a share of the nectar; vasukim-the snake Vasuki; pariviya-encircling; girau-Mandara Mountain; tasmin-unto it; netram-the churning rope; abdhim-the ocean of milk; muda anvitah-all surcharged with great pleasure; arebhire-began to act; surah-the demigods; yattah-with great endeavor; amrta-arthe-for gaining nectar; kuru-udvaha-O King Pariksit, best of the Kurus.