Rules about Performing Salah (Prayer) in an Unclean Cloth Regardless One Knows it or Not

11. Al-Husayn ibn Muhammad has narrated from ‘Abd Allah ibn ‘Amir from Ali ibn Mahziyar from Fadalah from Aban from ‘Abd al- Rahman ibn abu ‘Abd Allah who has said the following: “I once asked abu ‘Abd Allah عليه السلام, about a man who performs Salah (prayer) with clothes in which there is feces of human beings or cat or dog, if he is required to perform his Salah (prayer) again. He (the Imam) said, ‘If he did not know he is not required to perform his Salah (prayer) again.’”