SB 8.7.16
mathyamanat tatha sindhor
devasura-varutha-paih
yada sudha na jayeta
nirmamanthajitah svayam
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
When nectar did not come from the Ocean of Milk, despite so much endeavor by the best of the demigods and demons, the Supreme Personality of Godhead, Ajita, personally began to churn the ocean.