Kaṭhinavagga

Vinayapiṭaka · Parivāra · Vol. 8 · Section 266

[266] A bhikkhu requesting a robe (cīvara) from a householder or a householder's wife who is not a relation falls into two offenses (āpatti): in the act of requesting, an offense of wrong-doing (dukkaṭa); when it has been requested, an offense entailing expiation with forfeiture (nissaggiya pācittiya).

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 1 other place

Vol. 8 · Section 285 — Pattavagga