From Sahih Muslim (Hadith 566):
Salim, the freed slave of Shaddad, said:I came to 'A'isha, the wife of the Prophet (ﷺ), on the day when Sa'db. Abi Waqqas died. 'Abd al-Rahman b. Abu Bakr also came there and he performed ablution in her presence. She (Hadrat 'A'isha) said: Abd al-Rahman, complete the ablution as I heard the Allah's Messenger (ﷺ) say: Woe to the heels because of hell-fire
Reference: Muslim 566