Sayyiduna Ibn Abbas (may Allah be pleased with them both) said: The Prophet (peace and blessings be upon him) was kept occupied (in battle) and prevented from the Asr prayer until the sun set. So the Messenger of Allah (peace and blessings be upon him) said: "They kept us occupied from the middle prayer; may Allah fill their graves and their houses with fire."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 12017