Asma sent me to Ibn Umar with this message, "Word has reached me that you forbid three things, embroidered designs on a garment, saddle cushions made of purple silk, and fasting the entire month of Rajab."He replied, "As for what you mentioned about fasting Rajab, what then of one who fasts continuously? And as for what you mentioned about embroidered designs on a garment, I heard Umar say, 'I heard the Messenger of Allah ﷺ say, Whoever wears silk in this world will not wear it in the Hereafter.'"
حدثنا يحيى عن عبد الملك
أرسلتني أسماء إلى ابن عمر أنه بلغها أنك تحرم أشياء ثلاثة العلم في الثوب وميثرة الأرجوان وصوم رجب كله فقال أما ما ذكرت من صوم رجب فكيف بمن يصوم الأبد وأما ما ذكرت من العلم في الثوب فإني سمعت عمر رضي الله عنه يقول سمعت رسول الله ﷺ يقول من لبس الحرير في الدنيا لم يلبسه في الآخرة
Its isnad is sahih. Abdul-Malik is Ibn Abu Sulayman al-Arzami. Abdullah, the freedman of Asma, is Abdullah bin Kaysan, and Asma is the daughter of Abu Bakr.Al-mithara, with a kasra on the meem, is a type of mount covering used by the non-Arabs, made of silk or brocade, fashioned like a small cushion stuffed with cotton or wool, which the rider places under himself on the saddle atop the camel. Al-urjuwan, with a damma on the hamza, is a dye of deep, intense red.See 14735.