Muwatta Malik 5
موطأ مالك#5SahihYahya 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
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Salim al-HilaliSahih
In-book reference: 1:5