Acelakavagga

Vinayapiṭaka · Parivāra · Vol. 8 · Section 337

[337] One who requests (viññāpeti) medicine (bhesajja) beyond that [allowance] commits two offenses (āpatti): while he is requesting, in the act of effort, an offense of wrong-doing (dukkaṭa); when the request has been made, an offense of pācittiya.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 2 other places

Vol. 8 · Section 324 — Bhogajanavagga
Vol. 8 · Section 321 — Bhogajanavagga