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

2. Through the same chain of narrators as that of the previous Hadith it is narrated from Ali ibn Mahziyar from Fadalah ibn Ayyub from ‘Abd Allah ibn Sinan who has said the following: “I once asked abu ‘Abd Allah عليه السلام, about a man who performs Salah (prayer) and there is feces of human being, cat or dog in his clothes, ‘Must he perform his Salah (prayer) again?’ He (the Imam) said, ‘He is not required to perform his Salah (prayer) again, if he did not know about it.’”