It is narrated from Sayyiduna Salamah bin al-Akwa' (may Allah be pleased with him) that his paternal uncle struck a man from among the polytheists and killed him, and (in doing so) wounded himself as well, and he began to say: "I have killed myself." When this reached the Prophet (peace and blessings be upon him), he (peace and blessings be upon him) said: "For him there is a double reward."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from al-Rabi' bin Abi Salih except Abdullah bin Khirash, and Ahmad bin al-Nu'man is alone in transmitting it."
Hadith Referenceالمعجم الأوسط / باب الألف / 1628
Hadith Gradingمحدثین:فيه من لا يُعرف
Hadith Takhrij«قال الهيثمي: فيه من لم أعرفهم «مجمع الزوائد ومنبع الفوائد، ج 6، ص 149»» «أخرجه الطبراني فى «الكبير» برقم: 6274، والطبراني فى «الأوسط» برقم: 2151»