Ahmad ibn Muhammad ibn ‘Isa narrated from al-Barqi, from al-Qasim ibn ‘Urwah, from ‘Ubayd ibn Zurarah, who said: Abu Abdillah عليه السلام said: “When the sun passes the meridian, the time for the two prayers, Dhuhr and ‘Asr, has entered, except that this one (Dhuhr) is before that one (‘Asr). Then you are within the time for both of them until the sun sets.”