Sahih Muslim 241c
Sahih Muslim · Book 2: The Book of Purification · The obligation of washing the feet completely
'Abdullah b. Amr reported:
حَدَّثَنَا شَيْبَانُ بْنُ فَرُّوخَ ، وَأَبُو كَامِلٍ الْجَحْدَرِيُّ جَمِيعًا عَنْ أَبِي عَوَانَةَ ، - قَالَ أَبُو كَامِلٍ حَدَّثَنَا أَبُو عَوَانَةَ، - عَنْ أَبِي بِشْرٍ ، عَنْ يُوسُفَ بْنِ مَاهَكَ ، عَنْ عَبْدِ اللَّهِ بْنِ عَمْرٍو ، قَالَ تَخَلَّفَ عَنَّا النَّبِيُّ صلى الله عليه وسلم فِي سَفَرٍ سَافَرْنَاهُ فَأَدْرَكَنَا وَقَدْ حَضَرَتْ صَلاَةُ الْعَصْرِ فَجَعَلْنَا نَمْسَحُ عَلَى أَرْجُلِنَا فَنَادَى " وَيْلٌ لِلأَعْقَابِ مِنَ النَّارِ " .
The Messenger of Allah (ﷺ) lagged behind us on a journey. We travelled (back) and be took him; and then came the time of the afternoon prayer, and as we were going to wipe our feet he (the Holy Prophet) called out: Woe to the heels because of Hell-fire.