Ibn Muhayriz narrated: I kept the company of Sayyiduna Fadalah bin Ubayd (may Allah be pleased with him), who was a Companion of the Messenger of Allah (peace and blessings be upon him), and I said: Give me some advice, may Allah have mercy on you. He said: "Remember three things from me, and Allah will benefit you through them: if you are able to know others but not be known yourself, then do so; if you are able to listen and not speak, then do so; and if you are able to sit (with others) without people coming to sit with you, then do so."
Hadith Referenceالمعجم الكبير للطبراني / باب الفاء / 15859