Maliks Muwatta
Maliks Muwatta Book 001, Hadith Number 005.
Hadith Section/Book: Maliks Muwatta Maliks Muwatta Book 01. The Times Of Prayer
Section : The Times of Prayer.
Yahya related to me from Malik from Zayd ibn Aslam from Ata ibn Yasar and from Busr ibn Said and from al-Araj-all of whom related it from Abu Hurayra - that the Messenger of Allah, may Allah bless him and grant him peace, said, "Whoever manages to do a raka of subh before the sun has risen has done subh in time, and whoever manages to do a raka of asr before the sun has set has done asr in time."
Yahya related to me from Malik from Zayd ibn Aslam from Ata ibn Yasar and from Busr ibn Said and from al-Araj-all of whom related it from Abu Hurayra - that the Messenger of Allah, may Allah bless him and grant him peace, said, "Whoever manages to do a raka of subh before the sun has risen has done subh in time, and whoever manages to do a raka of asr before the sun has set has done asr in time."