Tattha cātuddasiṃ pañcadasinti catuddasannaṃ pūraṇī cātuddasī, pañcadasannaṃ pūraṇī pañcadasī, taṃ cātuddasiṃ pañcadasiṃ ca, pakkhassāti sambandho. Accantasaṃyoge cetaṃ upayogavacanaṃ. Yā ca pakkhassa aṭṭhamī, tañcāti yojanā. Pāṭihāriyapakkhañcāti pariharaṇakapakkhañca cātuddasīpañcadasīaṭṭhamīnaṃ yathākkamaṃ ādito antato vā pavesaniggamavasena uposathasīlassa pariharitabbapakkhañca terasīpāṭipadasattamīnavamīsu cāti attho. Aṭṭhaṅgasusamāgatanti pāṇātipātā veramaṇīādīhi aṭṭhahi aṅgehi suṭṭhu samannāgataṃ. Uposathaṃ upāgacchinti upavāsaṃ upagamiṃ, upavasinti attho. Yaṃ sandhāya vuttaṃ:-

"pāṇaṃ na hane na cādinnamādiye

musā na bhāse na ca majjapo siyā

abrahmacariyā virameyya methunā