Khalifah bin Ka'b Abu Dharr reports: I heard Abdullah bin Zubair (may Allah be pleased with him) while he was delivering a sermon, saying: O people, beware! Do not clothe your women in silk garments, for I heard Umar (may Allah be pleased with him) say: I heard the Messenger of Allah (peace and blessings be upon him) say: Do not wear silk, for whoever wears it in this world will not wear it in the Hereafter.