Narrated Abu Hurairah: The Messenger of Allah ﷺ 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.
Hadith Referenceسنن ابي داود / كتاب الأيمان والنذور / 3255
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح مسلم (1653)
Hadith Takhrij« صحیح مسلم/الأیمان 4 (1653)، سنن الترمذی/الأحکام 19 (1354)، سنن ابن ماجہ/الکفارات 14 (2120)، (تحفة الأشراف: 12826)، وقد أخرجہ: مسند احمد (2/228)، سنن الدارمی/النذور 11 (2394) (صحیح) »
Narrated Suwayd ibn Hanzalah: We went out intending (to visit) the Messenger of Allah ﷺ and Wail ibn Hujr was with us. His enemy caught him. The people desisted from swearing an oath, but I took an oath that he was my brother. So he left him. We then came to the Messenger of Allah ﷺ, and I informed him that the people desisted from taking the oath, but I swore that he was my brother. He said: You spoke the truth: A Muslim is a brother of a Muslim.
Hadith Referenceسنن ابي داود / كتاب الأيمان والنذور / 3256
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:حسن, أخرجه ابن ماجه (2119 وسنده حسن) جدة إبراھيم بن عبد الأعلٰي وثقھا الحاكم والذهبي
Hadith Takhrij« سنن ابن ماجہ/الکفارات 14 (2119)، (تحفة الأشراف: 4809)، وقد أخرجہ: مسند احمد (4/79) (صحیح) »