What did the Prophet Muhammad (saw) say when `Umar told him he had not offered the `Asr prayer and the sun had set?
 Narrated Jabir bin `Abdullah:                     On the day of the Khandaq `Umar came, cursing the disbelievers of Quraish and said, "O Allah's Apostle! I have not offered the `Asr prayer and the sun has set." The Prophet replied, "By Allah! I too, have not offered the prayer yet. "The Prophet then went to Buthan, performed ablution and performed the `Asr prayer after the sun had set and then offered the Maghrib prayer after it."