Anas bin Malik (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) said: "One who transgresses in (taking) zakah is like one who withholds it." Imam al-Bukhari said: The correct chain in our view is Sinan bin Sa'd, and Sa'd bin Sinan is a mistake.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الزكاة / 7280