Chapter 1: Purification (Kitab Al-Taharah)
Abu Qais, the freed slave of 'Amr b. al-' As, said 'Amr b. al-' As was in a battle. He then narrated the rest of the tradition. He then said: He washed his armpits and other joints where dirt was found, and he performed ablution like that for prayer. Then he led them in prayer. He then narrated the tradition in a similar way but did not mention of tayammum. Abu Dawud said: This incident has also been narrated by al-' Awza' i on the authority of Hassan b. 'Atiyyah. This version has the words: Then he performed tayammum.
Sunan Abi Dawud 335