Dhammapada · 14.1

Yassa jitaṃ nāvajīyati, jitamassa no yāti koci loke;Taṃ buddhamanantagocaraṃ, apadaṃ kena padena nessatha.

Yassa jitam navajiyati, jitamassa no yati koci loke; Tam buddhamanantagocaram, apadam kena padena nessatha.

His conquest cannot be undone; in this world none can revive his defeats. The Buddha whose range is infinite, whose path is trackless — by what path will you trace him?

— Dhammapada 14.1

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.