Canonical Reference: Appamada Sutta Verified Source

“The wealth of good deeds done in this life is the only true treasure that follows a being into the future, never leaving, like an enduring companion.”

Canonical Pali Original: Tasmā kareyya kalyāṇaṃ, nicayaṃ samparāyikaṃ; Puññāni paralokasmiṃ, patiṭṭhā honti pāṇinaṃ.

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

Delivered to King Pasenadi of Kosala at Savatthi on the lasting value of ethical actions over material accumulation.