"The Messenger of Allah ﷺ saw some sputum in the Qiblah of the Masjid, and he became so angry that his face turned red. Then a woman from the Ansar went and scratched off, and put some perfume in its place. The Messenger of Allah ﷺ said: 'How good this is.'" (Using translation from Nasāʾī 728)  

رَأَى رَسُولُ اللهِ ﷺ نُخَامَةً فِي قِبْلَةِ الْمَسْجِدِ فَغَضِبَ حَتَّى احْمَرَّ وَجْهُهُ فَقَامَتِ امْرَأَةٌ مِنَ الْأَنْصَارِ فَحَكَّتْهَا وَجَعَلَتْ فِي مَكَانِهَا خَلُوقًا قَالَ رَسُولُ اللهِ ﷺ «مَا أَحْسَنَ هَذَا»