Hadith 587
قلنا : ان اهل الصدقة يعتدون علينا ، افنكتم من اموالنا بقدر ما يعتدون؟ قال : لا
"We said (to the Messenger of Allah, peace be upon him): 'The collectors of Zakat are unjust to us; can we hide our wealth equal to their excess?' He said: 'No.'"