Sunan Ibn Majah 486
The Book of Purification and its Sunnah
حَدَّثَنَا حَرْمَلَةُ بْنُ يَحْيَى، حَدَّثَنَا ابْنُ وَهْبٍ، أَنْبَأَنَا يُونُسُ بْنُ يَزِيدَ، عَنِ ابْنِ شِهَابٍ، عَنْ عُرْوَةَ، عَنْ عَائِشَةَ، قَالَتْ قَالَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ " تَوَضَّئُوا مِمَّا مَسَّتِ النَّارُ " .
It was narrated that 'Aishah said:"The Messenger of Allah said: 'Perform ablution after (eating) that which has been changed by fire
Grading: Al-Albani: Sahih · Muhammad Fouad Abd al-Baqi: Sahih · Shuaib Al Arnaut: Sahih · Zubair Ali Zai: Sahih Muslim
Text from the public-domain hadith-api dataset. Numbering follows that dataset and can differ by a few from some printed editions — check the wording, not only the number.