The Messenger of Allah wiped his ears, putting his forefingers in his ears and wiping the back of them with his thumbs, so he wiped them inside and out.  

أَنَّ رَسُولَ اللَّهِ ﷺ مَسَحَ أُذُنَيْهِ دَاخِلَهُمَا بِالسَّبَّابَتَيْنِ وَخَالَفَ إِبْهَامَيْهِ إِلَى ظَاهِرِ أُذُنَيْهِ فَمَسَحَ ظَاهِرَهُمَا وَبَاطِنَهُمَا  

The prophet performed ablution and wiped his ears inside and out.  

أَنَّ النَّبِيَّ ﷺ تَوَضَّأَ فَمَسَحَ ظَاهِرَ أُذُنَيْهِ وَبَاطِنَهُمَا  

"The Prophet performed ablution, and he put his fingers in the (holes) inside of his ears."  

تَوَضَّأَ النَّبِيُّ ﷺ فَأَدْخَلَ إِصْبَعَيْهِ فِي جُحْرَىْ أُذُنَيْهِ  

The Messenger of Allah performed ablution and he wiped his head and his ears, inside and out.  

أَنَّ رَسُولَ اللَّهِ ﷺ تَوَضَّأَ فَمَسَحَ بِرَأْسِهِ وَأُذُنَيْهِ ظَاهِرَهُمَا وَبَاطِنَهُمَا