It is reported about Sayyiduna al-Nu'man bin Bashir (may Allah be pleased with him) that he said on the pulpit: "The greatest calamity is that you do evil deeds along with an evil faith."
Al-Tabarani recorded it in al-Mu'jam al-Awsat, and its narrators have been declared trustworthy.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الإيمان / 410
Hadith Gradingمحدثین:إسناده حسن
Hadith Takhrij«اخرجه الامام الطبراني فى معجم الاوسط 1899»