[520] Ekaṃ samayaṃ bhagavā sāvatthiyaṃ viharati jetavane anāthapiṇḍikassa ārāme . atha kho aññataro bhikkhu yena bhagavā tenupasaṅkami upasaṅkamitvā bhagavantaṃ abhivādetvā ekamantaṃ nisīdi . ekamantaṃ nisinno kho so bhikkhu bhagavantaṃ etadavoca ko nu kho bhante hetu ko paccayo yena midhekacce aṇḍajā nāgā uposathaṃ upavasanti vossaṭṭhakāyā ca bhavantīti . idha bhikkhu Ekaccānaṃ aṇḍajānaṃ nāgānaṃ evaṃ hoti mayaṃ kho pubbe kāyena dvayakārino ahumha vācāya dvayakārino manasā dvayakārino te mayaṃ kāyena dvayakārino vācāya dvayakārino manasā dvayakārino kāyassa bhedā paraṃ maraṇā aṇḍajānaṃ nāgānaṃ sahabyataṃ upapannā sacajja mayaṃ kāyena sucaritaṃ careyyāma vācāya sucaritaṃ careyyāma manasā sucaritaṃ careyyāma evaṃ mayaṃ [2]- kāyassa bhedā paraṃ maraṇā sugatiṃ saggaṃ lokaṃ upapajjeyyāma handa mayaṃ etarahi kāyena sucaritaṃ carāma vācāya sucaritaṃ carāma manasā sucaritaṃ carāmāti . Ayaṃ kho bhikkhu hetu ayaṃ paccayo yena midhekacce aṇḍajā nāgā uposathaṃ upavasanti vossaṭṭhakāyā ca bhavantīti.