I was with the Prophet ﷺ on a journey when he said, "Mughirah, take the water vessel."I took it and went out with him. The Messenger of Allah ﷺ walked on until he was hidden from my sight, then relieved himself. He came back wearing a Syrian cloak with narrow sleeves. He tried to pull his hand out through the sleeve, but it was too tight, so he pulled his hand out from underneath.
كنت مع النبي ﷺ في سفر فقال: يا مغيرة خذ الإداوة فأخذتها، ثم خرجت معه، فانطلق رسول الله ﷺ حتى توارى عني، فقضى حاجته، ثم جاء وعليه جبة شامية ضيقة الكمين، فذهب يخرج يده من كمها، فضاقت عليه، فأخرج يده من أسفلها.
Bukhari reported it in the Book of Prayer (363), and Muslim in the Book of Purification (274:77), both from the hadith of Abu Muawiya, from Amash, from Muslim, from Masruq, from Mughira bin Shuba, as he mentioned it. The wording given is that of Muslim, and Bukhari's wording is similar.His saying, "the Syrian cloak," appears in Tirmidhi's version as "the Roman cloak," and this carries the same meaning, because Syria used to be called by the name of the Roman state that ruled it.This contains evidence that there is no harm in wearing garments woven by the Magians, as Hasan said. Mamar said, "I saw Zuhri wearing garments from Yemen that had been dyed with urine." Bukhari mentioned both of these as suspended reports.There is disagreement over whether such a garment should be washed before wearing it. Most scholars held that it should be washed before wearing unless one is certain it is not impure. Malik said that if a person wears it before washing it, he must repeat his prayer. Zuhri's practice is explained either as his having washed it before wearing it, or as the urine having come from an animal whose meat is lawful to eat, in which case ghusl is not required.