Dhammapada · 25.23

Yo have daharo bhikkhu, yuñjati buddhasāsane;Somaṃ lokaṃ pabhāseti, abbhā muttova candimā.

Yo have daharo bhikkhu, yunjati buddhasasane; Somam lokam pabhaseti, abbha muttova candima.

The young bhikkhu who applies himself to the Buddha's teaching — he illuminates this world like the moon freed from clouds.

— Dhammapada 25.23

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.