僧羯磨 3.101

3.101

The Procedure of the Six Recollections (According to the Mahāsāṃghika [Vinaya]:) The first recollection: (meaning to know the number of days, whether the month is long or short, and the dark or bright fortnight. One declares, saying:) 'This month is long (if the month is short, declare short), from the first day to the fifteenth day of the bright fortnight.' (For the dark fortnight, one should say:) 'From the first day to the fourteenth or fifteenth day of the dark fortnight.' (According to the original system of the Western Regions, months have dark and bright fortnights; the bright fortnight is exclusively long, while the dark has both short and long; in this land, a month consists of thirty days. Therefore, in practicing the recollection, commonly knowing long and short conforms to the calendar system established in this land, while specifying the first, second, etc., days of the dark and bright fortnights accords with the original month and day system of the Western Regions.)