Khuddakavatthukkhandhaka

Vinayapiṭaka · Cūḷavagga (2) · Vol. 7 · Section 18

[18] Now at that time a certain bhikkhu was afflicted with an eye disease (cakkhurogābādha). They informed the Blessed One of this matter. … "Bhikkhus, I allow the face to be anointed on account of illness."

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 1 other place

Vol. 7 · Section 556 — Dūlathāmathaṅasikkhābada