Narrated Al-Bara:
"A garment of silk was gifted to the Messenger of Allah (ﷺ) so they began to marvel at its softness, so the Messenger of Allah (ﷺ) said: 'Do you marvel at this? Indeed, the handkerchiefs of Sa'd bin Mu'adh in Paradise are better than this.'" (ES)
English reference (ES): Vol. 1, Book 46, Hadith 3847 (ES)
Arabic reference (ES): Book 49, Hadith 4218 (ES)