Canonical Reference: Karaniya Metta Sutta (Discourse on Loving-Kindness), Verse 150 Verified Source

“Radiate boundless love and goodwill toward the entire world — above, below, and all around — unhindered, without hatred, and free from enmity.”

Canonical Pali Original: Mettāñca sabbalokasmiṃ, mānasaṃ bhāvaye aparimāṇaṃ; Uddhaṃ adho ca tiriyañca, asambādhaṃ averamasapattaṃ.

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

Pali Canon: Sutta Nipata 1.8 on cultivating universal goodwill (Metta Bhavana) without boundaries.