Tariq bin Ziyad reported,

We went out with Ali against the Khawarij, and he fought and killed them. Then he said, "Look carefully, for the Prophet of Allah ﷺ said, 'A people will emerge who speak the truth, but it will not pass beyond their throats. They will pass out of the truth as an arrow passes through its target. Their distinguishing sign is that among them is a black man with a deformed hand, on which are several black hairs. If he is among them, then you have killed the worst of people, and if he is not, then you have killed the best of people.'"So we wept. Then he said, "Search for him." We searched and found the deformed man. We fell down in prostration, and Ali fell down in prostration with us. However, he said, "They speak a word of truth."

Ahmad 848

Sahih

حدثنا الوليد بن القاسم بن الوليد الهمداني حدثنا إسرائيل حدثنا إبراهيم يعني ابن عبد الأعلى

عن طارق بن زياد قال

خرجنا مع علي إلى الخوارج فقتلهم ثم قال انظروا فإن نبي الله ﷺ قال إنه سيخرج قوم يتكلمون بالحق لا يجاوز حلقهم يخرجون من الحق كما يخرج السهم من الرمية سيماهم أن منهم رجلا أسود مخدج اليد في يده شعرات سود إن كان هو فقد قتلتم شر الناس وإن لم يكن هو فقد قتلتم خير الناس فبكينا ثم قال اطلبوا فطلبنا فوجدنا المخدج فخررنا سجودا وخر علي معنا ساجدا غير أنه قال يتكلمون بكلمة الحق

أحمد 848صحيح
Contents
Reference
Commentary
Ayat
Collection
Musnad Ahmad
Book
Ali bin Abu Talib
Numbering
Darussalam 848
Ahmad 848