Jami` at-Tirmidhi Book 10, Hadith 27
The Messenger of Allah said: "The best scent is the perfume of musk."
"One of the daughters of the Prophet died, so he said: 'Wash her an odd number of times, three, or five, or more than that as you see fit. Wash her with water and Sidr, and in the last (washing) add camphor, or something from camphor. When you are finished then inform me.' When we finished we informed him so he gave us his waist-sheet and said 'Wrap her in it.'"
The Prophet was asked about musk and he said: "It is the best of your perfumes."