1"Bhikkhus, there are these two occasions for entering upon the rains. [n.227] Vassūpanāyikā. The three-month rains residence is observed by monastics during the Indian rainy season. During this period, bhikkhus and bhikkhunīs must remain for three months at their chosen place of residence, though they are permitted to leave for up to seven days if there is a suitable reason. The earlier three-month rains period extends from the day after the full moon of Āsāḷha normally occurring in July or early August to the full moon of Kattika (normally in October or early November). The later three-month rains period begins and ends one month after the earlier one. What two? The earlier and the later. These are the two occasions for entering upon the rains."

1"Dvemā, bhikkhave, vassūpanāyikā. Katamā dve? Purimikā ca pacchimikā ca. Imā kho, bhikkhave, dve vassūpanāyikā"ti.

Dasamaṁ.
Kammakaraṇavaggo paṭhamo.

2Vajjā padhānā dve tapanīyā,
Upaññātena pañcamaṁ;
Saṁyojanañca kaṇhañca,
Sukkaṁ cariyā vassūpanāyikena vaggo.