Khuddakavatthukkhandhaka

Vinayapiṭaka · Cūḷavagga (2) · Vol. 7 · Section 15

[15] Now at that time the group-of-six (chabbaggiyā) bhikkhus looked at the reflection of their faces in a mirror (ādāsa) and also in a bowl of water. People complained, criticized, and spread it about, … "just like householders who enjoy sensual pleasures" … They reported this matter to the Blessed One. … "Bhikkhus, the reflection of the face should not be looked at in a mirror or in a bowl of water. Whoever should look, there is an offence (āpatti) of wrong-doing (dukkaṭa)." ¹ [Editorial note in the Siam Raṭṭha edition:] The Burmese (M.) and PTS (Yu.) editions read: "na aṅgulimuddikā dhāretabbā" ("a signet ring should not be worn").

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 3 other places