Volume 4 · Book 56 · Hadith 761
Narrated Anas: I have never touched silk or Dibaj (i.e. thick silk) softer than the palm of the Prophet nor have I smelt a perfume nicer than the sweat of the Prophet
— Sahih Bukhari, Volume 4, Book 56: Virtues and Merits of the Prophet (pbuh) and his Companions, Hadith #761