صحيح ابن خزيمه
Sahih Ibn Khuzaymah
جماع أبواب الوضوء وسننهChapters on Wudu and its Sunnahs
( 125) بَابُ التَّغْلِيظِ فِي تَرْكِ غَسْلِ الْعَقِبَيْنِ فِي الْوُضُوءِ،Chapter 125: Sternness in neglecting to wash the heels in ablution
Hadith Q161
وَالدَّلِيلُ عَلَى أَنَّ الْفَرْضَ غَسْلُ الْقَدَمَيْنِ لَا مَسْحُهُمَا، إِذَا كَانَتْا بَادِيَتَيْنِ غَيْرَ مُغَطَّيَتَيْنِ بِالْخُفِّ أَوْ مَا يَقُومُ مَقَامَ الْخُفِّ، لَا عَلَى مَا زَعَمَتِ الرَّوَافِضُ أَنَّ الْفَرْضَ مَسْحُ الْقَدَمَيْنِ لَا غَسْلُهُمَا، إِذْ لَوْ كَانَ الْمَاسِحُ عَلَى الْقَدَمَيْنِ مُؤَدِّيًا لِلْفَرْضِ، لَمَا جَازَ أَنْ يُقَالَ لِتَارِكِ فَضِيلَةٍ: وَيْلٌ لَهُ، وَقَالَ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: " وَيْلٌ لِلْأَعْقَابِ مِنَ النَّارِ "، إِذَا تَرَكَ الْمُتَوَضِّئُ غَسْلَ عَقِبَيْهِ
And the explanation of the evidence that when both feet are bare and not covered with leather socks, socks, etc., then it is obligatory to wash them, not to wipe over them, contrary to the statement of the Rafidah who say that wiping over the feet is obligatory, not washing them. Because if the person who wipes over the feet was fulfilling the obligation, then it would not be permissible to warn the one who leaves the more virtuous act with destruction, ruin, or the threat of Hell, whereas the Messenger of Allah (peace and blessings be upon him) said: "Woe to the heels from the fire." (He, peace and blessings be upon him, said this when those performing ablution had not washed their heels properly.)
