It is narrated from Sayyiduna Ali (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Indeed, I do not fear for my Ummah either a believer or a polytheist. As for the believer, his faith restrains him (from going astray); and as for the polytheist, his disbelief itself subdues him. But I fear for them a hypocrite who is learned of tongue: he says things that they recognise (as good) and does things that they reject (as evil)."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Abu Ishaq (may Allah have mercy on him) except Abbad bin Bishr (may Allah have mercy on him)."
Hadith Referenceالمعجم الأوسط / باب الميم / 7065
Hadith Gradingمحدثین:إسناده ضعيف جدًّا، فيه الحارث الأعور
Hadith Takhrij«قال الهيثمي: وفيه الحارث الأعور وهو ضعيف جدا «مجمع الزوائد ومنبع الفوائد، ج 1، ص 187»» «أخرجه ابن حجر فى «المطالب العالية» برقم: 2987 / 1، 2987 / 2، والطبراني فى «الصغير» برقم: 1024»