[666] That noble disciple, headman — thus devoid of covetousness, devoid of ill will, unconfused, clearly comprehending, ever mindful — dwells pervading one quarter with a mind imbued with loving-kindness (mettā); likewise the second; likewise the third; likewise the fourth. Thus above, below, across, everywhere, to all as to himself, he dwells pervading the entire world with a mind imbued with loving-kindness — abundant, exalted, measureless, without enmity, without ill will.
He reflects thus: 'This teacher holds such a doctrine and such a view: "There is nothing given, nothing offered, nothing sacrificed; there is no fruit or result of good and bad actions; there is no this world, no other world; there is no mother, no father; there are no beings spontaneously reborn (opapātika); there are in the world no ascetics and brahmins faring rightly and practicing rightly who, having realized this world and the other world for themselves by direct knowledge, make them known." If the word of that honored teacher is true, still it counts as incontrovertible (apaṇṇakatā) for me that I oppress no one, whether trembling or firm. In both respects I have made a winning throw (kaṭaggāha): in that I am restrained in body, restrained in speech, restrained in mind; and in that, with the breaking up of the body, after death, I shall be reborn in a good destination, in a heavenly world.'
Gladness (pāmujja) is born in him; in one who is gladdened, rapture is born; for one whose mind is filled with rapture, the body becomes tranquil; one whose body is tranquil feels pleasure; for one who is happy, the mind (citta) becomes concentrated. This, headman, is concentration on the Dhamma (dhammasamādhi). If therein you should obtain concentration of mind (cittasamādhi), in this way you could abandon this state of doubt.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.