It is narrated from Sayyiduna Anas bin Malik (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever is killed under a banner whose reality is not clear, calling to tribal partisanship ('asabiyyah) and fighting in support of his own family and kin, then his being killed is a death of Jahiliyyah (pre-Islamic ignorance)."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Suwayd bin Hujayr except al-Hajjaj bin al-Hajjaj; Qaza'ah bin Suwayd is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب العين / 3946
Hadith Gradingمحدثین:إسناده ضعيف لضعف قزعة بن سويد
Hadith Takhrij«قال الهيثمي: فيه قزعة بن سويد وهو ضعيف وقد وثق «مجمع الزوائد ومنبع الفوائد، ج 6، ص 286»» «أخرجه الطبراني فى «الأوسط» برقم: 416»