Sahih Bukhari
Sahih Bukhari Volume 002, Book 020, Hadith Number 195.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 20. Shortening The Prayers (At-Taqseer)
Narated By Anas bin Malik : offered four Rakat of Zuhr prayer with the Prophet (p.b.u.h) at Medina and two Rakat at Dhul-Hulaifa. (i.e. shortened the 'Asr prayer).