Related על שבת 235:1

They may not give a poor person wandering from place to place less than a loaf worth a pundion at a time when four seahs [of wheat cost] one sela. If he spends the night [at a place], they must give him the cost of what he needs for the night. If he stays over Shabbat they must give him enough food for three meals. He who has the money for two meals, he may not take anything from the charity dish. And if he has enough money for fourteen meals, he may not take any support from the communal fund. The communal fund is collected by two and distributed by three people.