Anas b. Malik reported that Allah's Apostle (ﷺ) 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 (ﷺ) 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 (ﷺ) 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.
وَحَدَّثَنِي مُحَمَّدُ بْنُ رَافِعٍ، حَدَّثَنَا حُجَيْنُ بْنُ الْمُثَنَّى، حَدَّثَنَا عَبْدُ الْعَزِيزِ، - وَهُوَ ابْنُ أَبِي سَلَمَةَ - عَنْ إِسْحَاقَ بْنِ عَبْدِ اللَّهِ بْنِ أَبِي طَلْحَةَ، عَنْ أَنَسِ بْنِ مَالِكٍ، قَالَ كَانَ النَّبِيُّ صلى الله عليه وسلم يَدْخُلُ بَيْتَ أُمِّ سُلَيْمٍ فَيَنَامُ عَلَى فِرَاشِهَا وَلَيْسَتْ فِيهِ - قَالَ - فَجَاءَ ذَاتَ يَوْمٍ فَنَامَ عَلَى فِرَاشِهَا فَأُتِيَتْ فَقِيلَ لَهَا هَذَا النَّبِيُّ صلى الله عليه وسلم نَامَ فِي بَيْتِكِ عَلَى فِرَاشِكِ - قَالَ - فَجَاءَتْ وَقَدْ عَرِقَ وَاسْتَنْقَعَ عَرَقُهُ عَلَى قِطْعَةِ أَدِيمٍ عَلَى الْفِرَاشِ فَفَتَحَتْ عَتِيدَتَهَا فَجَعَلَتْ تُنَشِّفُ ذَلِكَ الْعَرَقَ فَتَعْصِرُهُ فِي قَوَارِيرِهَا فَفَزِعَ النَّبِيُّ صلى الله عليه وسلم فَقَالَ ‏"‏ مَا تَصْنَعِينَ يَا أُمَّ سُلَيْمٍ ‏"‏ ‏.‏ فَقَالَتْ يَا رَسُولَ اللَّهِ نَرْجُو بَرَكَتَهُ لِصِبْيَانِنَا قَالَ ‏"‏ أَصَبْتِ ‏"‏ ‏.‏
Reference : Sahih Muslim 2331 b
In-book reference : Book 43, Hadith 114
USC-MSA web (English) reference : Book 30, Hadith 5762
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