Hadithcore
Sunan an-Nasa'i, 185

It was reported that Jabir (ra) said "That last of the two matters from the Messenger ofAllah (ﷺ) was leaving off ablution from that which had been touched by fire."

أَخْبَرَنَا عَمْرُو بْنُ مَنْصُورٍ، قَالَ حَدَّثَنَا عَلِيُّ بْنُ عَيَّاشٍ، قَالَ حَدَّثَنَا شُعَيْبٌ، عَنْ مُحَمَّدِ بْنِ الْمُنْكَدِرِ، قَالَ سَمِعْتُ جَابِرَ بْنَ عَبْدِ اللَّهِ، قَالَ كَانَ آخِرَ الأَمْرَيْنِ مِنْ رَسُولِ اللَّهِ صلى الله عليه وسلم تَرْكُ الْوُضُوءِ مِمَّا مَسَّتِ النَّارُ ‏.‏

References2 variants
In-Book Reference
Book 1, Hadith 186
English Reference
Vol. 1, Book 1, Hadith 185