Zuhayr al-Amiri said: I said to Abdullah bin Amr bin al-As (may Allah be pleased with them both): Tell me about sadaqah, what kind of wealth is it? He said: 'Sharru mal' "It is the worst of wealth" (that is, it is a trial and a test). This wealth is to be given to the blind, the lame or those whose hands and feet do not move (the disabled), the orphans, and everyone in a similar situation to all of these. I said: Do the collectors and the mujahidun have any right in the sadaqah? He said: For the collectors, an amount in proportion to their work; for the mujahidun in the way of Allah, according to their need, or he said: according to their condition. The Messenger of Allah (peace and blessings be upon him) said: "Indeed sadaqah is not lawful for a rich person, nor is it lawful for one who is healthy and strong."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب قسم الصدقات / 13159