Dhammapada · 17.6

Sadā jāgaramānānaṃ, ahorattānusikkhinaṃ;Nibbānaṃ adhimuttānaṃ, atthaṃ gacchanti āsavā.

Sada jagaramananam, ahorattanusikkhinam; Nibbanam adhimuttanam, attham gacchanti asava.

For the ever-wakeful, training day and night, intent on nibbana — the taints come to destruction.

— Dhammapada 17.6

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.