The Book of Prayers (Kitab Al-Salat)

Muslim :: Book 4 : Hadith 1819

Aswad and Masruq reported: We bear testimony to the fact that 'A'isha said: Never was there a day that he (the Holy Prophet) was with me and he did not observe two rak'ahs of prayer in my house, i. e. two rak'ahs after the Asr.

Source materials are from the University of Southern California MSA site
Hadith eBooks converted from Imaan Star