Dhammapada · 21.5
Mātaraṃ pitaraṃ hantvā, rājāno dve ca khattiye;Raṭṭhaṃ sānucaraṃ hantvā, anīgho yāti brāhmaṇo.
Mataram pitaram hantva, rajano dve ca khattiye; Rattham sanucaram hantva, anigho yati brahmano.
Having killed mother and father and two warrior-kings, having killed the kingdom along with its retinue — the brahmin goes untroubled.
— Dhammapada 21.5
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.