Sahih Muslim Bk 30, Number 5761: Bk 43.113
rAnas b. Malik reported that Allah's Apostle (may peace be upon him) used to come to our house and there was perspiration upon his body. My mother brought a bottle and began to pour the sweat in that. When Allah's Apostle (may peace be upon him) got up he said: Umm Sulaini, what is this that you are doing? Thereupon she said: That is your sweat which we mix in our perfume and it becomes the most fragrant perfume.

Sahih Muslim Bk 30, Number 5762: Bk 43.114
Anas b. Malik reported that Allah's Apostle (may peace be upon him) came to the house of Umm Sulaim and slept in her bed while she was away from her house. On the other day too he slept in her bed. She came and it was said to her: It is Allah's Apostle (may peace be upon him) who is having siesta in your house, lying in your bed. She came and found him sweating and his sweat falling on the leather cloth spread on her bed. She opened her scent−bag and began to fill the bottles with it. Allah's Apostle (may peace be upon him) was startled and woke up and said: Umm Sulaim, what are you doing? She said: Allah's Messenger, we seek blessings for our children through it. Thereupon he said: You have done something right.

Sahih Muslim Bk 30, Number 5763: Bk 43.115
Umm Sulaim reported that Allah's Apostle (may peace be upon him) 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 (may peace be upon him) said: Umm Sulaim, what is this? She said: It is your sweat, which I put in my perfume. Allah's Apostle (may peace be upon him) sweated in cold weather when revelation descended upon him.

Sahih Muslim Bk 31, Number 6091: Bk 44.236
Abu Musa reported: I was in the company of Allah's Apostle (may peace be upon him) as he had been sitting in Ji'rana (a place) between Mecca and Medina and Bilal was also there, that there came to Allah's Apostle (may peace be upon him) a desert Arab, and he said: Muhammad, fulfill your promise that you made with me. Allah's Messenger (may peace be upon him) said to him: Accept glad tidings. Thereupon the desert Arab said: You shower glad tidings upon me very much; then Allah's Messenger (may peace be upon him) turned towards Abu Musa and Bilal seemingly in a state of annoyance and said: Verily he has rejected glad tidings but you two should accept them. We said: Allah's Messenger, we have readily accepted them. Then Allah's Messenger (may peace be upon him) called for a cup of water and washed his hands in that and face too and put the saliva in it and then said: Drink out of it and pour it over your faces and over your chest and gladden yourselves. They took hold of the cup and did as Allah's Messenger (may peace be upon him) had commanded them to do. Thereupon Umm Salama called from behind the veil: Spare some water in your vessel for your mother also, and they also gave some water which had been spared for her.