It is narrated from Hazrat Suwaid bin Ghaflah that he said: We were present at Yarmouk. The narrator says: We encountered Hazrat Umar while we were wearing brocade and silk. Hazrat Umar ordered us to be pelted with stones. We thought to ourselves: What has reached him about us? The narrator says: Then we took off those clothes and said: He did not like our appearance. Then when we met Hazrat Umar again, he welcomed us and said: You had come to me earlier in the appearance of the people of shirk (polytheism). Surely, Allah was not pleased with brocade and silk for those before you either.