Muhammad bin Al-Hasan said: This narration does not contradict the earlier report we narrated from Faris, from Sahib Al-Askari عليه السلام, which states that it is not permissible to pray in a garment contaminated by chicken droppings. This earlier report is understood to refer to droppings of chickens that feed on filth (jallal). As for chickens that are not jallal (i.e., they do not feed on impurities), their droppings are treated like those of animals whose meat is permissible to eat. Therefore, it is permissible to pray in garments affected by their droppings or urine.