Ahnaf bin Qais says: I came to Madinah Munawwarah, and I wanted to receive a gift from Sayyiduna Uthman bin Affan (may Allah be pleased with him). I sat down in a circle of the Quraysh. A man with disheveled clothes came there, he had wrapped a cloth around his head, and he began to say: Give glad tidings to those who hoard treasures that their foreheads, backs, and sides will be branded with fire. Then he separated himself and prayed two rak‘ahs behind a pillar. I asked: Who is this? It was said: This is Sayyiduna Abu Dharr (may Allah be pleased with him). So I went to him and said: What is the meaning of what you were saying? He said: By Allah, I only said what those people heard from the Noble Prophet (peace and blessings be upon him). I said: May Allah have mercy on you, I used to receive a gift from Sayyiduna Umar (may Allah be pleased with him), what do you think about that? He said: You may take it, these days it is in the form of cooperation, but soon it will become a debt, when that situation arises, then leave it. (The words of another narration are:) When such wealth becomes the price of your religion, then leave it.