ENOfficial
Anas b. Malik reported to them (his companions) that Allah's Messnger (ﷺ) had granted concession to Abd al-Rahman b. *Anf and Zubair b. 'Awwam for the wearing of a silk shirt during the journey and because of itch which they both had or any other disease from which both of them had been suffering.
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا أَبُو كُرَيْبٍ، مُحَمَّدُ بْنُ الْعَلاَءِ حَدَّثَنَا أَبُو أُسَامَةَ، عَنْ سَعِيدِ بْنِ أَبِي عَرُوبَةَ، حَدَّثَنَا قَتَادَةُ، أَنَّ أَنَسَ بْنَ مَالِكٍ، أَنْبَأَهُمْ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم رَخَّصَ لِعَبْدِ الرَّحْمَنِ بْنِ عَوْفٍ وَالزُّبَيْرِ بْنِ الْعَوَّامِ فِي الْقُمُصِ الْحَرِيرِ فِي السَّفَرِ مِنْ حِكَّةٍ كَانَتْ بِهِمَا أَوْ وَجَعٍ كَانَ بِهِمَا .
sunnah.com