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

13. Ahmad ibn Idris has narrated from Muhammad ibn Ahmad from Ahmad ibn al-Hassan ibn Ali from ‘Amr ibn Sa‘id from Musaddiq ibn Sadaqah from ‘Ammar who has said the following: “I once asked abu ’Abd Allah عليه السلام, about a man who vomits in his clothes, if he can perform Salah (prayer) in them without washing. He (the Imam) said, ’It is not an offense to do so.’”