Man Lā Yaḥḍuruh al-Faqīh
Hadith 809809 - وَ رُوِيَ عَنْ دَاوُدَ اَلصَّرْمِيِّ أَنَّهُ قَالَ: سَأَلَ رَجُلٌ أَبَا اَلْحَسَنِ اَلثَّالِثَ عَلَيْهِ اَلسَّلاَمُ عَنِ اَلصَّلاَةِ فِي اَلْخَزِّ يُغَشُّ بِوَبَرِ اَلْأَرَانِبِ فَكَتَبَ «يَجُوزُ ذَلِكَ.
Hadith.809 - It was narrated from Dawud al-Sarmi that a man asked Abu al-Hasan al-Thalith (Imam Ali ibn Muhammad Al-Hadi (as)), about praying in silk (khazz) that is mixed with rabbit fur.
The Imam wrote in response: "That is permissible."