Anas told that God’s messenger gave licence to az-Zubair and ‘Abd ar-Rahman b. ‘Auf to wear silk because of an itch which they had. (Bukhari and Muslim.) In a version by Muslim he said they complained of bugs and he gave them licence to wear silk shirts.
Hadith Referenceمشكوة المصابيح / كتاب اللباس / 4326
Hadith Gradingالألبانی:مُتَّفق عَلَيْهِ | زبیر علی زئی:متفق عليه
Hadith Takhrij´تحقيق و تخريج: محدث العصر حافظ زبير على زئي رحمه الله` «متفق عليه، رواه البخاري (5839) و مسلم (2076/25، 2076/26)»