Musannaf Ibn Abi Shaybah 28268 — Concealing a man's faults, and a man

Zayd bin Wahb said that someone was seized and brought to Sayyiduna Ibn Mas'ud (may Allah be pleased with him), and he was told: "Wine is dripping from the beard of this so-and-so!" At this, Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) said: "We have indeed been forbidden from prying. But if something becomes apparent to us, then we will take him to account for it."