Samayasaddassa atthuddhāre abhisamayasaddassa gahaṇe kāraṇaṃ vuttanayeneva

veditabbaṃ. Idha panassa kālo attho samavāyādīnaṃ asambhavato. Desadesakaparisā viya hi desanāya nidānabhāve kālo eva icchitabboti. Yasmā panettha samayoti kālo adhippeto, tasmā saṃvaccharautumāsaaḍḍhamāsarattidivasapubbaṇhamajjhanhikasāyaṇha- paṭhamayāmamajjhimayāmapacchimayāmamuhuttādīsu kālabhedabhūtesu samayesu ekaṃ samayanti dīpeti.

Kasmā panettha aniyamitavaseneva kālo niddiṭṭho, na utusaṃvaccharādivasena niyametvā niddiṭṭhoti ce? kiñcāpi etesu saṃvaccharādīsu samayesu yaṃ yaṃ suttaṃ yasmiṃ yasmiṃ saṃvacchare utumhi māse pakkhe rattibhāge divasabhāge vā vuttaṃ, sabbampi taṃ therassa suviditaṃ suvavatthāpitaṃ paññāya. Yasmā pana "evamme sutaṃ asukasaṃvacchare asukamāse asukapakkhe asukarattibhāge asukadivasabhāge"ti evaṃ vutte na sakkā sukhena dhāretuṃ vā uddisituṃ vā uddisāpetuṃ vā, bahuṃ ca vattabbaṃ hoti, tasmā ekeneva padena tamatthaṃ samodhānetvā "ekaṃ samayan"ti āha.