Dhammapada · 12.4

Attā hi attano nātho, ko hi nātho paro siyā;Attanā hi sudantena, nāthaṃ labhati dullabhaṃ.

Atta hi attano natho, ko hi natho paro siya; Attana hi sudantena, natham labhati dullabham.

Self is the lord of self — what other lord could there be? Through self well-tamed one finds the lord rarely found.

— Dhammapada 12.4

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.