@(saṃ.mahā. 19/389 brahmasutta, 19/409 maggasutta) 6 khu,su. 25/720 nālakasutta Pana ubhayathāpi na yujjati. Kasmā? idha pubbabhāgamaggassa adhippetattā. Kāyādicatuārammaṇappavatto hi pubbabhāgasatipaṭṭhānamaggo idha adhippeto, na lokuttaro, so ca anekavāraṃpi ayati, anekañcassa ayanaṃ hoti.

Pubbepi ca imasmiṃ pade mahātherānaṃ sākacchā ahosi. Tipiṭakacūḷanāgatthero pubbabhāgasatipaṭṭhānamaggoti āha. Ācariyo panassa tipiṭakacūḷasumanatthero missakamaggoti āha. Pubbabhāgo bhanteti. Missako āvusoti. Ācariye pana punappunaṃ bhaṇante bhaṇante apaṭibāhitvā tuṇhī ahosi. Pañhaṃ avinicchinitvāva uṭṭhahiṃsu. Athācariyatthero nhānakoṭṭhakaṃ gacchanto "mayā missakamaggo kathito, cūḷanāgo pubbabhāgamaggoti ādāya voharati, ko nukho ettha vinicchayo"ti suttantaṃ ādito paṭṭhāya parivattento "yo hi koci bhikkhave ime cattāro satipaṭṭhāne evaṃ bhāveyya satta vassānī"ti imasmiṃ ṭhāne sallakkhesi. Lokuttaramaggo uppajjitvā satta vassāni tiṭṭhamāno nāma natthi, mayā vutto missakamaggo na labbhati. Cūḷanāgena diṭṭho pubbabhāgamaggo ca labbhatīti ñatvā aṭṭhamiyaṃ dhammassavane saṅghuṭṭhe agamāsi.

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