[207] Then those brahmin students, angered and displeased, approached the brahmin Lohicca; and having approached, they said this to the brahmin Lohicca: "Let the honourable sir know that the ascetic Mahākaccāna categorically disparages and repudiates the hymns of the brahmins!" When this was said, the brahmin Lohicca was angered and displeased. Then it occurred to the brahmin Lohicca: "But it is not proper for me that, merely on the strength of what I have heard from the students alone, I should abuse, oppose, and revile the ascetic Mahākaccāna. Suppose I were to approach him and question him."
Then the brahmin Lohicca, together with those brahmin students, approached the Venerable Mahākaccāna; and having approached, he exchanged greetings with the Venerable Mahākaccāna, and when the courteous and amiable talk was concluded, he sat down to one side. Sitting to one side, the brahmin Lohicca said this to the Venerable Mahākaccāna: "Master Kaccāna, did a number of brahmin students, gatherers of firewood, pupils of mine, come here?"
"Brahmin, a number of brahmin students, gatherers of firewood, your pupils, did come here."
"But did Master Kaccāna have any conversation with those students?"
"Brahmin, I did have a conversation with those students."
"But in what way did Master Kaccāna's conversation with those students go?"
"Brahmin, my conversation with those students went thus:
'Those brahmins of former times were supreme in virtue — those brahmins who remember the ancient (dhamma) …
free of barrenness towards all beings — that is the path to the attainment of Brahmā.'
Thus, brahmin, went my conversation with those [students]."
"Master Kaccāna spoke of one 'with doors unguarded.' In what way, Master Kaccāna, is one 'with doors unguarded'?"
"Here, brahmin, someone, having seen a form with the eye, is drawn to a pleasing form and is repelled by a displeasing form. He dwells with mindfulness (sati) unestablished, with a limited mind (citta), and he does not understand as it really is (yathābhūta) that liberation of mind (cetovimutti) and liberation by wisdom (paññāvimutti) wherein those arisen evil, unwholesome dhammas cease without remainder. Having heard a sound with the ear … Having smelt an odour with the nose … Having tasted a flavour with the tongue … Having touched a tangible with the body … Having cognized a mental phenomenon with the mind, he is drawn to a pleasing mental phenomenon and is repelled by a displeasing mental phenomenon. He dwells with mindfulness unestablished, with a limited mind, and he does not understand as it really is that liberation of mind and liberation by wisdom wherein those arisen evil, unwholesome dhammas cease without remainder. It is in this way, brahmin, that one is 'with doors unguarded.'"
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.