[Machine] I heard Abu Huraira say that ablution is done with whatever touches fire. I mentioned this to Marwan, and he said, "I don't know who we should ask about this when we have the Prophet's wives among us." So he sent me to Umm Salama, and she told me that the Messenger of Allah went out to prayer and took a stick, cleaned his teeth, and then prayed without performing ablution.  

سَمِعْتُ أَبَا هُرَيْرَةَ يَقُولُ الْوُضُوءُ مِمَّا مَسَّتِ النَّارُ فَذَكَرْتُ ذَلِكَ أَوْ ذَكَرَ ذَلِكَ لِمَرْوَانَ فَقَالَ مَا أَدْرِي مَنْ نَسْأَلُ كَيْفَ وَفِينَا أَزْوَاجُ النَّبِيِّ ﷺ؟ فَبَعَثَنِي إِلَى أُمِّ سَلَمَةَ فَحَدَّثَتْنِي أَنَّ رَسُولَ اللهِ ﷺ خَرَجَ إِلَى الصَّلَاةِ فَتَنَاوَلَ عَرْقًا فَانْتَهَسَ عَظْمًا ثُمَّ صَلَّى وَلَمْ يَتَوَضَّأْ