Musannaf Ibn Abi Shaybah 27244 — A man told to sit with others

Abu Ja'far al-Khatmi said that his grandfather, Sayyiduna Umayr bin Habib (may Allah be pleased with him), advised his sons, saying: O my sons, beware of sitting with fools, for sitting with them is a disease. Whoever is forbearing with a fool will be gladdened by his forbearance, and whoever answers him will regret it. Whoever does not put up with a little of what a fool brings will have to put up with much. When one of you intends to enjoin good and forbid evil, let him train himself to bear harm patiently, for whoever is patient does not feel the harm.