Bara bin Azib reported,
A garment of silk was given as a gift to the Messenger of Allah ﷺ, and the people began to marvel at its softness. The Messenger of Allah ﷺ said, "Are you amazed by this? The handkerchiefs of Saad bin Muaz in Paradise are finer than this."
Tirmidhi 3847
Sahihحدثنا محمود بن غيلان حدثنا وكيع عن سفيان عن أبي إسحق
عن البراء قال
أهدي لرسول الله ﷺ ثوب حرير فجعلوا يعجبون من لينه فقال رسول الله ﷺ أتعجبون من هذا لمناديل سعد بن معاذ في الجنة أحسن من هذا
Reference, agreed upon by Bukhari and Muslim. Bukhari narrated it in the Book of the Beginning of Creation, chapter on what has been said about the description of Paradise and that it is created, hadith 3249, from the hadith of Sufyan Thawri. Muslim narrated it, hadith 2468, from the hadith of Abu Ishaq, with the same wording.There is also a version on this topic from Anas [previously mentioned, 1723].