The Messenger of Allah ﷺ said: Perform ablution after eating anything which has been cooked by fire.  

قَالَ رَسُولُ اللَّهِ ﷺ الْوُضُوءُ مِمَّا أَنْضَجَتِ النَّارُ  

AbuSufyan ibn Sa'id ibn al-Mughirah reported that he entered upon Umm Habibah who presented him a glass of sawiq (a drink prepared with flour and water) to drink. He called for water and rinsed his mouth. She said: O my cousin, don't you perform ablution? The Prophet ﷺ said: Perform ablution after eating anything cooked with fire, or he said: anything touched by fire. Abu Dawud said: The version of al-Zuhri has: O my paternal cousin.  

أَنَّهُ دَخَلَ عَلَى أُمِّ حَبِيبَةَ فَسَقَتْهُ قَدَحًا مِنْ سَوِيقٍ فَدَعَا بِمَاءٍ فَتَمَضْمَضَ فَقَالَتْ يَا ابْنَ أُخْتِي أَلاَ تَوَضَّأُ إِنَّ النَّبِيَّ ﷺ قَالَ تَوَضَّئُوا مِمَّا غَيَّرَتِ النَّارُ أَوْ قَالَ مِمَّا مَسَّتِ النَّارُ