(46) باب فِي إِسْبَاغِ الْوُضُوءِ
'Abd Allah b. 'Amr reported :
The Messenger of Allah (ﷺ) saw some people (performing ablution) while their heels were dry. He then said : Woe to the heels because of Hell. Perform the ablution in full.
Reference: Sunan Abi Dawud 97
In-book reference: Book 1, Hadith 97
English translation: Book 1, Hadith 97