Mahājanakajātaka

Suttapiṭaka · Khuddakanikāya · Jātaka (2) · Vol. 28 · Section 447

[447] "O deity, whoever, having understood that [a task] is utterly incapable of being carried through to its end, would not [strive to] protect his own life — he would come to know [the consequence], should he slacken. Some in this world, O deity, engage in works [looking to] the fruit of their designs; those works succeed, or they do not. Do you not see, O deity, the fruit of action (kammaphala), to be seen for oneself (sandiṭṭhika)? The others have sunk; I am crossing over, and I see you close at hand. Therefore I shall strive according to my ability and according to my strength; going on to the further shore of the ocean, I shall do what is to be done by a man."

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.