Canonical Reference: Dhp 21 Verified Source

“Heedfulness and awareness is the path to the Deathless (Nibbana); heedlessness is the path to death. The heedful do not die, while the heedless are as if already dead.”

Canonical Pali Original: Appamādo amatapadaṃ, pamādo maccuno padaṃ; Appamattā na mīyanti, ye pamattā yathā matā.

— Gautam Buddha
The Awakened One, Founder of Dhamma
Historical Setting & Context:

Pali Canon: Dhammapada 2.21, celebrated throughout the Buddhist world as the cornerstone of contemplative mindfulness (Appamada).