The Sufficient (Vol 3) · Hadith 1563 (#Ḥadīth #26)
Chapter 60 | Kinds of Clothes in Which It Is Undesirable to Perform Salah (Prayer) As Well As Otherwise
26ـ عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ رَفَعَهُ عَنْ أَبِي عَبْدِ الله (عَلَيْهِ الْسَّلام) فِي الْخَزِّ الْخَالِصِ أَنَّهُ لاَ بَأْسَ بِهِ فَأَمَّا الَّذِي يُخْلَطُ فِيهِ وَبَرُ الأرَانِبِ أَوْ غَيْرُ ذَلِكَ مِمَّا يُشْبِهُ هَذَا فَلاَ تُصَلِّ فِيهِ.
26. A number of our people have narrated from Ahmad ibn Muhammad who, in a marfu‘ manner has said the following: “Abu ‘Abd Allah , about pure al-Khazz has said, ‘It is not an offense to perform Salah (prayer) with it, but do not perform Salah (prayer) with that which is mixed with fur of foxes or other things.’”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).