CHAPTER: Ambiguity In Oaths.
Narrated Abu Hurairah: The Messenger of Allah صلی اللہ علیہ وسلم as saying: Your oath should be about something regarding which your companion will believe you. Musaddad said: Abdullah bin Abi Salih narrated to me. Abu Dawud said: Both of them refer to the same person: 'Abbad bin Abu Salih and Abdullah bin Abi Salih.
Authentic