Chapter on What is Permissible to Pray in, from Clothing and Place, and What is Not Permissible to Pray in, from That

Ahmad ibn Muhammad, from Muhammad ibn ‘Isa, from Ayyub ibn Nuh, who raised it (to the Imam عليه السلام), who said: Abu Abdillah عليه السلام, peace be upon him, said: "Prayer in pure khazz is not a problem. But as for that which is mixed with rabbit fur or anything similar to it, do not pray in it."