Dutiyaanagatabhayasutta 1.8

1.8

handāhaṃ paṭikacceva vīriyaṃ ārabhāmi appattassa pattiyā anadhigatassa adhigamāya asacchikatassa sacchikiriyāya, yenāhaṃ dhammena samannāgato jiṇṇakopi phāsuṃ viharissāmī’ti.

I’d better preempt it by rousing up energy for attaining the unattained, achieving the unachieved, and realizing the unrealized. That way, when it happens, I’ll live comfortably even though I’m old.’