Canonical Reference: Dhp 223 Verified Source

“Conquer anger with non-anger. Conquer wickedness with goodness. Conquer the stingy with generosity. Conquer the liar with truth.”

Canonical Pali Original: Akkodhena jine kodhaṃ, asādhuṃ sādhunā jine; Jine kadariyaṃ dānena, saccenālikavādinaṃ.

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

Pali Canon: Dhammapada 17.223 on overcoming enmity and resentment through virtuous actions.