(3) باب مَنْ رَفَعَ صَوْتَهُ بِالْعِلْمِ
Narrated `Abdullah bin `Amr:
Once the Prophet (ﷺ) remained behind us in a journey. He joined us while we were performing ablution for the prayer which was over-due. We were just passing wet hands over our feet (and 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." (DE)
Reference (DE): Sahih al-Bukhari 60 (DE)
In-book reference (DE): Book 3, Hadith 2 (DE)
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 1, Book 3, Hadith 57 (DE)