It was narrated from Anas bin Malik that the Messenger of Allah (ﷺ) granted a concession to Zubair bin ‘Awwam and ‘Abdur-Rahman bin ‘Auf, allowing them to wear silk shirts, because of a rash they were suffering from.
Hadith Referenceسنن ابن ماجه / كتاب اللباس / 3592
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:متفق عليه