Sahih Bukhari | Volume 1 | Hadith Number 201
Narrated by 'Abdullah bin 'Umar
Sa'd bin Abi Waqqas said, "The Prophet passed wet hands over his Khuffs." 'Abdullah bin 'Umar asked Umar about it. 'Umar replied in the affirmative and added, "Whenever Sa'd narrates a Hadith from the Prophet, there is no need to ask anyone else about it."