Sayyiduna Ali (may Allah be pleased with him) said: The Prophet (peace and blessings be upon him) forbade me from qassi garments and the mithara. Abu Burdah (may Allah have mercy on him) said: We asked Ali (may Allah be pleased with him): "What is qassi cloth?" He said: It is a cloth which used to come to us from Syria and Egypt; it had silk in it, with patterns like citrons. And by mithara is meant a cloth which women make for their husbands, like wraps, which are used as saddle-covers.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب صلاة الخوف / 6119