Porāṇakattherā kira piyadhammassavanā honti, saddaṃ sutvā ca "ahaṃ paṭhamaṃ ahaṃ paṭhaman"ti ekappahāreneva osaranti. Tasmiṃpi divase cūḷanāgattherassa vāro, tena dhammāsane nisīditvā vījaniṃ gahetvā pubbagāthāsu vuttāsu therassa āsanapiṭṭhiyaṃ ṭhitassa etadahosi "raho nisīditvā na vakkhāmī"ti. Porāṇakattherā hi anusuyyakā honti. Na attano rucimeva ucchubhāraṃ viya evaṃ ukkhipitvā vicaranti, kāraṇameva gaṇhanti, akāraṇaṃ visajjenti. Tasmā thero "āvuso cūḷanāgā"ti āha. So ācariyassa viya saddoti dhammaṃ ṭhapetvā "kiṃ bhante"ti āha. Āvuso cūḷanāga mayā vutto missakamaggo na labbhati, tayā vutto pubbabhāgasatipaṭṭhānamaggova labbhatīti. Thero cintesi "amhākaṃ ācariyo sabbapariyattidharo tepiṭakasutabuddho, evarūpassapi nāma bhikkhuno ayaṃ pañho āluḷeti, anāgate dhammakathikā imaṃ pañhaṃ āluḷessantīti suttaṃ gahetvā imaṃ pañhaṃ