Sunan Ibn Majah, Hadith 440 ⓘ
It was narrated from Rubai' that: The prophet performed ablution and wiped his ears inside and out.
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا شَرِيكٌ، حَدَّثَنَا عَبْدُ اللَّهِ بْنُ مُحَمَّدِ بْنِ عَقِيلٍ، عَنِ الرُّبَيِّعِ، أَنَّ النَّبِيَّ ـ صلى الله عليه وسلم ـ تَوَضَّأَ فَمَسَحَ ظَاهِرَ أُذُنَيْهِ وَبَاطِنَهُمَا .
also referenced under: Book 1, Hadith 475 (In-Book) & Volume 1, Book 1, Hadith 440 (DarusSalam)