Dhammapada · 26.5

Divā tapati ādicco, rattimābhāti candimā;Sannaddho khattiyo tapati, jhāyī tapati brāhmaṇo;Atha sabbamahorattiṃ, buddho tapati tejasā.

Diva tapati adicco, rattimabhati candima; Sannaddho khattiyo tapati, jhayi tapati brahmano; Atha sabbamahorattim, buddho tapati tejasa.

The sun shines by day; the moon glows by night; the warrior shines in armor; the brahmin shines in meditation. But the Buddha shines in glory by day and by night.

— Dhammapada 26.5

Source: Pali text from the Khuddaka Nikāya of the Pali Canon (oldest extant Buddhist scripture, compiled c. 3rd century BCE). Public-domain English readings drawn from F. Max Müller's translation in Sacred Books of the East, Vol X (1881) and the Buddhist Publication Society's freely-licensed Acharya Buddharakkhita rendering.