(22) باب طِيبِ عَرَقِ النَّبِيِّ صلى الله عليه وسلم وَالتَّبَرُّكِ بِهِ .
Umm Sulaim reported that Allah's Apostle (ﷺ) visited her house and (took rest) and she spread a piece of cloth for him and he had had a siesta on it. And he sweated profusely and she collected his sweat and put it in a perfume and in bottles. Allah's Apostle (ﷺ) said:
Umm Sulaim, what is this? She said: It is your sweat, which I put in my perfume. Allah's Apostle (ﷺ) sweated in cold weather when revelation descended upon him.
Reference: Sahih Muslim 2332
In-book reference: Book 43, Hadith 115
USC-MSA web (English) reference(deprecated numbering scheme): Book 30, Hadith 5763