It was narrated that Bara' bin 'Azib said:
"The Messenger of Allah was given a gift of a length of silk fabric. The people started passing it around to one another. The Messenger of Allah said: 'Are you admiring this?' They said: 'Yes, O Messenger of Allah.' He said: 'By the One in Whose Hand is my soul! The handkerchief of Sa'd bin Mu'adh in Paradise is better than this.'"
English reference: Vol. 1, Book 1, Hadith 157
Arabic reference: Book 1, Hadith 162