[244] Then a certain bhikkhu approached the Blessed One … Sitting to one side, that bhikkhu said to the Blessed One: "Venerable sir, it is said, 'a speaker of the Dhamma (dhammakathika), a speaker of the Dhamma.' In what way, venerable sir, is one a speaker of the Dhamma?"
"Bhikkhus, if a bhikkhu teaches the Dhamma for the purpose of disenchantment (nibbidā) with the eye, for its fading away (virāga), for its cessation, he can fittingly be called 'a bhikkhu who is a speaker of the Dhamma.' If a bhikkhu is practising for disenchantment with the eye, for its fading away, for its cessation, he can fittingly be called 'a bhikkhu practising in accordance with the Dhamma (dhammānudhammapaṭipanno).' If, through disenchantment with the eye, through its fading away, through its cessation, a bhikkhu is liberated by non-clinging (anupādā vimutto), he can fittingly be called 'a bhikkhu who has attained Nibbāna in this very life (diṭṭhadhammanibbānapatto).' …
If a bhikkhu teaches the Dhamma for the purpose of disenchantment with the tongue, for its fading away, for its cessation, he can fittingly be called 'a bhikkhu who is a speaker of the Dhamma.' …
If a bhikkhu teaches the Dhamma for the purpose of disenchantment with the mind (mano), for its fading away, for its cessation, he can fittingly be called 'a bhikkhu who is a speaker of the Dhamma.' If a bhikkhu is practising for disenchantment with the mind, for its fading away, for its cessation, he can fittingly be called 'a bhikkhu practising in accordance with the Dhamma.' If, through disenchantment with the mind, through its fading away, through its cessation, a bhikkhu is liberated by non-clinging, he can fittingly be called 'a bhikkhu who has attained Nibbāna in this very life.'"
The tenth [sutta].
The New-and-Old (Navapurāṇa) Chapter, the fifth.
Its summary (uddāna):
Kamma, the four on the Suitable (Sappāyā), the one Without Pupils (Anantevāsika), What Purpose (Kimatthiyā),
Is There a Method (Atthi nu kho pariyāyo), the Faculties (Indriya), and with the Speaker (Kathikena).
Summary of chapters in the Third Fifty:
Yogakkhemi and the World (Loka), the Householder (Gahapati) and with Devadaha,
and with New-and-Old (Navapurāṇa) — fifty; therefore it is called the third.
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The Chapter on the Destruction of Delight (Nandikkhaya), the first.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.