Abu Dawud
Prayer
Book Number: 002 / Hadith Number: 1275
Narated By 'Aisha, Ummul Mu'minin : Dhakwan, the client of 'Aisha, reported on the authority of 'Aisha: The Apostle of Allah (pbuh) used to pray after the afternoon prayer but prohibited others from it; and he would fast continuously but forbid others to do so.