Dhammapada · 21.8

Suppabuddhaṃ pabujjhanti, sadā gotamasāvakā;Yesaṃ divā ca ratto ca, niccaṃ dhammagatā sati.

Suppabuddham pabujjhanti, sada gotamasavaka; Yesam diva ca ratto ca, niccam dhammagata sati.

Well-awakened, the disciples of Gotama always rise — those whose mindfulness, day and night, is constantly with the Dhamma.

— Dhammapada 21.8

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.