Ubaidah (al-salman) said: Ali mentioned about the people of al Nahrawan, saying: Among them there will be a man with a defective hand or with a small hand. if you were not to overjoy. I would inform you of what Allah has promised (the reward for) those who will kill them at the tongue of Muhammad ﷺ. I asked: Have you heard this from him? He replied: Yes, by the lord of the Kaabah.
Hadith Referenceسنن ابي داود / كتاب السنة / 4763
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح مسلم (1066)
Hadith Takhrij« صحیح مسلم/الزکاة 48 (1066)، سنن ابن ماجہ/المقدمة 12 (167)، (تحفة الأشراف: 10233)، وقد أخرجہ: مسند احمد (1/83، 95، 144، 155، 113، 121، 122) (صحیح) »