Yahya related to me from Malik that he had heard that Abd ar-
Rahman ibn Abi Bakr was visiting A'isha, the wife of the Prophet, may
AIIah bless him and grant him peace, on the day that Sad ibn Abi
Waqqas died, and he asked for some water to do wudu. A'isha said to
him, ''Abd ar-Rahman! Perform your wudu fully, for I heard the
Messenger of Allah, may Allah bless him and grant him peace, say, 'Woe
to the heels in the fire.' "
Muwatta Malik Book 2, Hadith 5