Hadith 163 - Ablutions (Wudu') - Sahih Al-Bukhari - صحيح البخاري - Collection of Actions, Sayings and Teachings of Prophet Muhammad (صلى الله عليه و سلم) - Kutub as-Sittah

4. Ablutions (Wudu') - كتاب الوضوء

27) Chapter: Washing both feet, and it is not sufficient to pass wet hands over the feet

Narrated `Abdullah bin `Amr:

The Prophet (ﷺ) remained behind us on a journey. He joined us while we were performing ablution for the `Asr prayer which was overdue and we were just passing wet hands over our feet (not washing them thoroughly) so he addressed us in a loud voice saying twice , "Save your heels from the fire."

Reference: 163
English reference: Vol. 1, Book 4, Hadith 164
In-book reference: Book 4, Hadith 29
Grade: Sahih
Read this hadith from Darussalam Collection

27) باب غَسْلِ الرِّجْلَيْنِ وَلاَ يَمْسَحُ عَلَى الْقَدَمَيْنِ

حَدَّثَنَا مُوسَى، قَالَ حَدَّثَنَا أَبُو عَوَانَةَ، عَنْ أَبِي بِشْرٍ، عَنْ يُوسُفَ بْنِ مَاهَكَ، عَنْ عَبْدِ اللَّهِ بْنِ عَمْرٍو، قَالَ تَخَلَّفَ النَّبِيُّ صلى الله عليه وسلم عَنَّا فِي سَفْرَةٍ سَافَرْنَاهَا، فَأَدْرَكَنَا وَقَدْ أَرْهَقْنَا الْعَصْرَ، فَجَعَلْنَا نَتَوَضَّأُ وَنَمْسَحُ عَلَى أَرْجُلِنَا، فَنَادَى بِأَعْلَى صَوْتِهِ ‏‏‏.‏ مَرَّتَيْنِ أَوْ ثَلاَثًا‏.‏ "‏ وَيْلٌ لِلأَعْقَابِ مِنَ النَّارِ ‏"