Peah8: 7
אֵין פּוֹחֲתִין לֶעָנִי הָעוֹבֵר מִמָּקוֹם לְמָקוֹם מִכִּכָּר בְּפוּנְדְיוֹן מֵאַרְבַּע סְאִין בְּסֶלַע. לָן — נוֹתְנִין לוֹ פַּרְנָסַת לִינָה. שָׁבַת — נוֹתְנִין לוֹ מְזוֹן שָׁלשׁ סְעֻדּוֹת. מִי שֶׁיֶּשׁ לוֹ מְזוֹן שְׁתֵּי סְעֻדּוֹת — לֹא יִטֹּל מִן הַתַּמְחוּי. מְזוֹן אַרְבַּע עֶשְׂרֵה סְעֻדּוֹת — לֹא יִטֹּל מִן הַקֻּפָּה. וְהַקֻּפָּה נִגְבֵּית בִּשְׁנַיִם וּמִתְחַלֶּקֶת בִּשְׁלֹשָׁה.
We do not give a poor person who is traveling from place to place less than a loaf which costs a pundion when four seahs cost a sela. [If] he stays overnight, we give him provision for night-lodging. [If] he stays over Shabbos, we give him food for three meals.  Whoever has [enough] food for two meals may not take from the [charity] plate. [If he has enough] food for fourteen meals, he may not take from the [charity] fund. The [charity] fund is collected by two and distributed by three.