i can't answer you in hebrew
but i can try using simple english words. a funding source is a place from whice you get money to pay for stuff...say you need money to pay for a new shirt, your parents are a "funding source". valid means.. that the place from which you get the money is "ok"...so stealing would not be a valid funding source, but taking money from your parents would be. ok, i really tried using simple words, if i didn't help you try forum 740