SB 8.6.21
amrtotpadane yatnah
kriyatam avilambitam
yasya pitasya vai jantur
mrtyu-grasto ’maro bhavet
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Immediately endeavor to produce nectar, which a person who is about to die may drink to become immortal.