Muhammad ibn Ya‘qub, from Ali ibn Muhammad, from Abdullah ibn Ishaq al-‘Alawi, from al-Hasan ibn Ali, from Muhammad ibn Sulayman al-Daylami, from ‘Aytham ibn Aslam al-Najashi, from Abu Basir who said: I asked Abu Abdillah عليه السلام about praying in fur garments. Imam عليه السلام said: "(Imam) Ali ibn al-Husayn عليه السلام was a man sensitive to cold, and the furs of the Hijaz would not keep him warm because their tanning was done with qaraz (a plant extract). So He عليه السلام would send to Iraq and He عليه السلام would be brought fur from your region, and He عليه السلام would wear it. But when the time for prayer arrived, He عليه السلام would take it off, and also take off the shirt that was in contact with it. He عليه السلام was asked about that, and He (Imam Husayn عليه السلام) said: 'Indeed, the people of Iraq deem it permissible to wear the skins of dead animals, and they claim that tanning it is its purification (that tanning makes it lawful).’"