Sayyiduna Anas bin Malik (may Allah be pleased with him) reports this statement of the Prophet (peace and blessings be upon him): "Whoever fights under a banner, fighting out of tribal partisanship ('asabiyyah) or supporting tribal partisanship, his fighting is the fighting of the Jahiliyyah (pre-Islamic ignorance)."
Al-Tabarani recorded it in al-Mu'jam al-Awsat. Its chain contains Qaza'ah bin Suwayd, who is da'if (weak), though he has been declared trustworthy.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الديات / 10717
Hadith Gradingمحدثین:إسنادہ ضعیف
Hadith Takhrij«اخرجه الطبراني فى المعجم الاوسط (418) ، أخرجه المعجم الأوسط للطبراني برقم: 418»