Riyad as-Salihin, Book 4, Hadith 810 (In-Book)

Anas (May Allah be pleased with him) reported: Messenger of Allah permitted Zubair and `Abdur-Rahman bin `Auf (May Allah be pleased with them) to wear silk because they were suffering from an itch. [Al-Bukhari and Muslim].

عن أنس رضى الله عنه قال‏:‏ رخص رسول الله ، صلى الله عليه وسلم، للزبير وعبد الرحمن بن عوف رضى الله عنهما في لبس الحرير لحكة بهما‏.‏ ‏.‏

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