The Messenger of Allah granted a concession to 'Abdur-Rahman bin 'Awf and Az-Zubair bin Al-'Awwam allowing them to wear silken shirts because of scabies that they were suffering from.
Sunan an-Nasa'i Book 48, Hadith 271
← Previous Hadith "The Messenger of Allah enjoined seven things upon us, and forbade seven things for us. He forbade to us gold rings, silver vessels, Al-Mayathir, Al-Qassiyah, Al-Istabraq, Ad-Dibaj, and silk."

Sunan an-Nasa'i Book 48, Hadith 270 Next Hadith → The Prophet granted a concession to 'Abdur-Rahman and Az-Zubair to wear silken shirts because of scabies that they were suffering from.

Sunan an-Nasa'i Book 48, Hadith 272