Mukhtasar Bukhari

Narrated by Sayyiduna Ibn Abbas (may Allah be pleased with them both): Some beloved personalities mentioned before me, and the most beloved among them to me was the Commander of the Faithful, Umar (may Allah be pleased with him), stated that the Messenger of Allah (peace and blessings be upon him) forbade performing prayer after the Fajr prayer until the sun rises, and after the Asr prayer until the sun sets.