Sunan Abi Dawud

Narrated Abu Hurairah:I heard Messenger of Allah (ﷺ) say: Swearing produces a ready sale for a commodity but blots out the blessing. The narrator Ibn al-Sarh said: ""for earning"". He also narrated this tradition from Sa'id b. al-Musayyab on the authority of Abu Hurairah from the Prophet (ﷺ)