Midrash su Salmi 68:20

R. Tachlipha, brother of Rabanai Huzanah, taught (Fol. 16): "All the necessities of a man are definitely assigned to him by Heaven during the ten days between New Year and the Day of Atonement, except the expenses for the Sabbath, the festivals, and for educating his children; for these purposes, one who spends little is assigned little; but one who spends much gets a big assignment." R. Abahu said: "Where is the passage to prove this? (Ps. 81, 4) Blow the horn at the new moon while it (the moon) is hidden on the day of our feast. What festival is that on which the new moon is hidden (seen only by a few)? This is New Year's. Immediately following the above is the passage. For this is chok (a statute) for Israel, an ordinance by the God of Jacob. How do we know that the word chok refers to maintenance? It is written (Gen. 47, 22) And they ate their (chok) portion which Pharaoh gave them. Mar Zutra said: From here we learn it (Pr. 30, 8) Let me eat the bread Chuki (appointed to me). We are taught in a Baraitha: It is told about Shammai, the senior, that every day of the week he ate in honor of the Sabbath. When he found a good animal, he would say: "This shall be for the Sabbath." And when he found a better one, he ate the former, and left the better one for the Sabbath; but Hillel, the Elder, had another habit: Because all his deeds were for the sake of Heaven, as it is said (Ps. 68, 20) Blessed be the Lord! day by day. We are also taught so in the following Baraitha: Beth Shammai say: "Prepare from every day for the Sabbath," but Beth Hillel say: "Praised be the Lord day by day."

“…and the people shall go out and gather what is needed for the day…” (Exodus 16:4) This is what is written “Blessed is the Lord; every day…” (Psalms 68:20) The Holy One said to Israel: with the measure that a man measures with, so he is measured. I gave you the Torah in order that you be occupied with it every day, as it says “Fortunate is the man who listens to me to watch by my doors day by day…” (Proverbs 8:34) And so too “Yet they seek Me daily…” (Isaiah 58:2) By your lives, I will satisfy you with food from the heavens every day, as it says “…and the people shall go out and gather what is needed for the day, so that I can test them, whether or not they will follow My teaching.” (Exodus 16:4) Furthermore, I will bless you every day, as it says “Blessed is the Lord; every day God lavishes upon us…” (Psalms 68:20) When you do My will I will call you “…borne from birth…” (Isaiah 46:3) and I will fill up (ma’amis) for you the cup of salvation in the merit of the Holy Temple, which is called a ‘stone of burden’ (maamasa), as it says “And it shall come to pass on that day that I will make Jerusalem a stone of burden for all peoples…” (Zechariah 12:3)