Sayyiduna Hudhayfah bin al-Yaman (may Allah be pleased with him) narrates: "I was holding the reins of the she-camel of the Messenger of Allah (peace and blessings be upon him), leading it from the front, and Sayyiduna Ammar (may Allah be pleased with him) was driving it from behind, or (the narrator is unsure) Sayyiduna Ammar (may Allah be pleased with him) was leading it from the front and I was driving it from behind, when suddenly twelve men with their faces covered came towards us." He (peace and blessings be upon him) said: "These are hypocrites until the Day of Resurrection." We said: "O Messenger of Allah! Will you not send someone to each one of them and have him killed?" He (peace and blessings be upon him) said: "I dislike that people should say that Muhammad (peace and blessings be upon him) kills his companions. It may be that Allah Almighty will suffice you against them by means of the 'dubaylah'." We asked: "What is the dubaylah?" He (peace and blessings be upon him) said: "An ember (flame) of fire that will be placed on the main artery of the heart (the niyat of the heart) of one of them, and it will kill him."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from al-A'mash except Abu Bakr bin Ayyash, and Yahya bin Adam is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب الميم / 8100
Hadith Gradingمحدثین:فيه عبد الله بن سلمة، مختلف فيه
Hadith Takhrij«قال الهيثمي: فيه عبد الله بن سلمة وثقه جماعة وقال البخاري لا يتابع على حديثه «مجمع الزوائد ومنبع الفوائد، ج 1، ص 109»»