Kaṭhinavagga

Vinayapiṭaka · Parivāra · Vol. 8 · Section 263

[263] Having accepted an out-of-season robe (akālacīvara), a bhikkhu who lets a month pass commits one offence (āpatti): a nissaggiya pācittiya (an offence entailing forfeiture and expiation).

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 1 other place

Vol. 8 · Section 288 — Gathāmalagataabapācittiyakaṇḍa