It is narrated from Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "Hoarding food grain in Makkah is ilhad (deviation and wrongdoing)."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Ata (may Allah have mercy on him) except Ibn Muhaysin (may Allah have mercy on him), and Abdullah bin Mu'ammal (may Allah have mercy on him) is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب الألف / 1485
Hadith Gradingمحدثین:فيه عبد الله بن المؤمل مختلف فيه
Hadith Takhrij«قال الهيثمي: وفيه عبد الله بن المؤمل وثقه ابن حبان وغيره وضعفه جماعة «مجمع الزوائد ومنبع الفوائد، ج 4، ص 101»»