रत्नैर्महार्हैस्तुतुषुर्न देवाः न भेजिरे भीमविषेण भीतिम् ।
सुधां विना न प्रययुर्विरामम् न निश्चितार्थाद्विरमन्ति धीराः                      - नीतिशतकम्

Ratnair mahaarhai stutushrun devaaha Na bhejire bheemavishena bheetim
Sudhaam vinaa na prayayur veeramam Na nishchitaartha dwiramanti dheeraha

The gods were not happy with the precious gems obtained from the milky ocean. They were not afraid of the deadly poison. They did not rest until they obtained the nectar of immortality. In fact, the steadfast do not relax without accomplishing the determined task

The above subhashita refers to Samudra Manthan (Churning of Ocean)