Hadith #3253 (Sunan Abi Dawud)
Book: Oaths and Vows (Kitab Al-Aiman Wa Al-Nudhur)
Narrator(s): Aisha bint Abi Bakr, Hameed bin Musa'da bin al-Mubarak حميد بن مسعدة بن المبارك, Hisan bin Ibrahim حسان بن إبراهيم, Ibrahim bin Maymun al-Sa'igh إبراهيم بن ميمون الصائغ
Grade: Sahih

The Prophet (ﷺ) said: He who swears by Amanah (faithfulness) is not one of us.

Source: https://parallelquran.com/hadith/sunan-abi-dawud-3253/