na bhetavyam kalakutad
lobhah karyo na vo jatu
rosah kamas tu vastusu
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
A poison known as kalakuta will be generated from the Ocean of Milk, but you should not fear it. And when various products are churned from the ocean, you should not be greedy for them or anxious to obtain them, nor should you be angry.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
It appears that by the churning process many things would be generated from the Ocean of Milk, including poison, valuable gems, nectar and many beautiful women. The demigods were advised, however, not to be greedy for the gems or beautiful women, but to wait patiently for the nectar. The real purpose was to get the nectar.