[Machine] The Prophet ﷺ used to frequent Umm Sulaim's home, and he was one of the people who perspired the most. So she prepared a mat for him, and he used to recline on it. She drew a line between his feet, and the sweat would dry up and she would collect it. He asked her, "O Umm Sulaim, what is this?" She replied, "It is your sweat, O Messenger of Allah. I keep it as a fragrance." He supplicated for her with a good supplication.  

كَانَ النَّبِيُّ ﷺ يَقِيلُ عِنْدَ أُمِّ سُلَيْمٍ وَكَانَ مِنْ أَكْثَرِ النَّاسِ عَرَقًا فَاتَّخَذَتْ لَهُ نِطَعًا فَكَانَ يَقِيلُ عَلَيْهِ وَخَطَّتْ بَيْنَ رِجْلَيْهِ خَطًّا فَكَانَتْ تُنَشِّفُ الْعَرَقَ فَتَأْخُذُهُ فَقَالَ مَا هَذَا يَا أُمَّ سُلَيْمٍ؟ فَقَالَتْ عَرَقُكَ يَا رَسُولَ اللهِ أَجْعَلُهُ فِي طِيبِي فَدَعَا لَهَا بِدُعَاءٍ حَسَنٍ