It is narrated from Sayyiduna Abdullah bin Amr (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever is asked about some knowledge and conceals it will be bridled with a bridle of fire on the Day of Resurrection."
Imam al-Tabarani (may Allah have mercy on him) said: "This hadith is narrated from Sayyiduna Abdullah bin Amr (may Allah be pleased with them both) only with this chain; Abdullah bin Ayyash is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب الميم / 5027
Hadith Gradingمحدثین:رجاله موثقون
Hadith Takhrij«قال الهيثمي: رجاله موثقون «مجمع الزوائد ومنبع الفوائد، ج 1، ص 163»» «أخرجه ابن حبان فى «صحيحه» برقم: 96، والحاكم فى «المستدرك» برقم: 346، والطبراني فى «الكبير» برقم: 14617»