Hadith 352

'Abdullah b. Ibrahim b. Qariz reported that he found Abu Huraira performing ablution in the mosque, who said: I am performing ablution because of having eaten pieces of cheese, for I heard the Messenger of Allah (may peace be upon him) say: Perform ablution (after eating anything) touched by fire.

قَالَ ابْنُ شِهَابٍ أَخْبَرَنِي عُمَرُ بْنُ عَبْدِ الْعَزِيزِ، أَنَّ عَبْدَ اللَّهِ بْنَ إِبْرَاهِيمَ بْنِ قَارِظٍ، أَخْبَرَهُ أَنَّهُ، وَجَدَ أَبَا هُرَيْرَةَ يَتَوَضَّأُ عَلَى الْمَسْجِدِ فَقَالَ إِنَّمَا أَتَوَضَّأُ مِنْ أَثْوَارِ أَقِطٍ أَكَلْتُهَا لأَنِّي سَمِعْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ ‏"‏ تَوَضَّئُوا مِمَّا مَسَّتِ النَّارُ ‏"‏ ‏.‏

Reference: 308150
In-book reference: Book 3, Hadith 352
Hadith 352 - The Book of Purification - Sahih Muslim - Sunnah.com