Abdullah bin Kaab bin Malik reported,

Kaab was the first to recognize the Messenger of Allah ﷺ after the defeat, when people were saying that the Messenger of Allah ﷺ had been killed.Kaab said, "I recognized his eyes shining from beneath the helmet, so I called out at the top of my voice, 'Muslims, rejoice! This is the Messenger of Allah ﷺ!' He gestured to me to be silent."When they recognized the Messenger of Allah ﷺ, they rose with him and made their way toward the mountain pass. With him were Abu Bakr and Umar, Ali, Talha, Zubayr, and Harith bin al-Simma, along with a group of Muslims.When the Messenger of Allah ﷺ was making his way up into the pass, Ubayy bin Khalaf caught up with him, saying, "Muhammad, may I not be saved if you are saved!"The companions said, "Messenger of Allah, shall one of us turn back to deal with him?"He replied, "Leave him to me."When Ubayy drew near, the Messenger of Allah ﷺ took the spear from Harith bin al-Simma. Some of the people said, as was related to me, "When the Messenger of Allah ﷺ took it, he gave it such a shake that we scattered away from him the way hairs scatter from a camel's back when it shakes itself. Then he turned to face Ubayy and struck him with it a single thrust that sent him reeling repeatedly off the back of his horse."

عن عبد الله بن كعب بن مالك قال

كان كعب أول من عرف رسول الله ﷺ بعد الهزيمة، وقول الناس: قتل رسول الله ﷺ قال كعب: عرفت عينيه تزهران من تحت المغفر، فناديت بأعلى صوتي: يا معشر المسلمين أبشروا هذا رسول الله ﷺ فأشار إلي أن أنصت، فلما عرفوا رسول الله ﷺ نهضوا به معهم نحو الشعب ومعه أبو بكر وعمر وعلي وطلحة والزبير والحارث بن الصمة في رهط من المسلمين، ولما أسند رسول الله ﷺ في الشعب أدركه أبي بن خلف وهو يقول: يا محمد لا نجوت إن نجوت، فقال القوم: أيعطف عليه يا رسول الله رجل منا؟ فقال: دعوه، فلما دنا تناول رسول الله ﷺ الحربة من الحارث بن الصمة. يقول بعض القوم فيما ذكر لي: فلما أخذها رسول الله ﷺ انتفض بها انتفاضة تطايرنا عنه تطاير الشعر عن ظهر البعير إذا انتفض ثم استقبله فطعنه بها طعنة تدأدا منها عن ظهر فرسه مرارا.