Chapter 1: Purification (Kitab Al-Taharah)
This is transmitted by Shu' bah through a different chain of narrators. This version adds: He (' Ammar) said: He (the Prophet) then blew it and wiped with it his face and hands up to elbows or up to the forearms. Shu' bah said: Salamah used to narrate (the words) "the hands and the face and the forearms". One day Mansur said to him: Look, what are you saying, because no one except you mentions the (word) "forearms".
Sunan Abi Dawud 325