Suwaid b. an-Nu‘man said that he went out with God’s messenger in the year of Khaibar , and when they were at as-Sahba’ which is very near Khaibar, he prayed the afternoon prayer. He then called for food, and when only some flour was produced, he ordered it to be moistened;
then God’s messenger and the company ate. After that he got up to pray the sunset prayer, and when he and the company had rinsed their mouths he prayed without performing ablution.
Buraida said that God’s messenger prayed the prayers on the day of the Conquest with one ablution and wiped over his shoes. ‘Umar said,
“You have done something today that you have not been accustomed to do.” He replied, “I have done it purposely, ‘Umar.”