Sahih Muslim
The Book Pertaining to the Excellent Qualities of the Holy Prophet (may Peace be upon them) and His Companions (Kitab Al-Fadail)
Book Number: 030 / Hadith Number: 5759
Anas reported: I never smelt ambergris or musk as fragrant as the fragrance of the body of Allah's Messenger (may peace be upon him) and I never touched brocade or silk and found it as soft as the body of Allah's Messenger (may peace be upon him).