The Book Pertaining to Clothes and Decoration (Kitab Al-Libas wa'l-Zinah)
Muslim :: Book 24 : Hadith 5166
Uqba b. 'Amir said: A silk go vn was presented to Allah's Messenger (may peace be upon him) and he wore it and observed prayer in it and then returned and put it off so violently as if he despised it. He then said: It does not befit the Godfearing persons.