Sahih al-Bukhari 96
Sahih al-Bukhari · Book 3: Knowledge · Repeating ones talk thrice in order to make others understand
Narrated `Abdullah bin `Amr:
حَدَّثَنَا مُسَدَّدٌ ، قَالَ حَدَّثَنَا أَبُو عَوَانَةَ ، عَنْ أَبِي بِشْرٍ ، عَنْ يُوسُفَ بْنِ مَاهَكَ ، عَنْ عَبْدِ اللَّهِ بْنِ عَمْرٍو ، قَالَ تَخَلَّفَ رَسُولُ اللَّهِ صلى الله عليه وسلم فِي سَفَرٍ سَافَرْنَاهُ فَأَدْرَكَنَا وَقَدْ أَرْهَقْنَا الصَّلاَةَ صَلاَةَ الْعَصْرِ وَنَحْنُ نَتَوَضَّأُ، فَجَعَلْنَا نَمْسَحُ عَلَى أَرْجُلِنَا، فَنَادَى بِأَعْلَى صَوْتِهِ " وَيْلٌ لِلأَعْقَابِ مِنَ النَّارِ ". مَرَّتَيْنِ أَوْ ثَلاَثًا.
Once Allah's Messenger (ﷺ) remained behind us in a journey. He joined us while we were performing ablution for the `Asr prayer which was over-due. We were just passing wet hands over our feet (not washing them properly) so the Prophet (ﷺ) addressed us in a loud voice and said twice or thrice, "Save your heels from the fire."