翻譯名義集 2.251

2.251

【Muhūrta】Translated in the Abhidharma as an "instant" (xuyu). One day and one night together comprise thirty muhūrtas. The Mahāsaṅghika-vinaya states: "Twenty layus make one instant." The verse says: "One hundred and twenty kṣaṇas / Constitute the measure of a tatkṣaṇa. / Sixty of these make a lava, / Thirty of these an instant (muhūrta), / Thirty of these a day and night. / Thirty days and nights make a month; / Twelve months make a year, / In which half a night is subtracted."