Midrash sa Ruth 2:4: Otzar Midrashim, Ein Yaakov (Glick Edition), Ein Yaakov & Ruth Rabbah

...And in Jonah it is written, "I would rather die than live." Jonah was the son of the woman of Zarfat. He had already died once, and knew that he would have rest, and Elijah did not die. And so he said, "am I not better than my ancestors?"

Said R. Joshua b. Levi: "Three things were done by the worldly court, and the heavenly court agreed with them. They are: The reading of the Book of Esther on Purim (Feast of Esther); greeting with the Holy Name, and placing the tithe belonging to the Levites in the treasury of the sanctuary. As to the first, we infer from (Esther 9, 27) The Jews ordained, and took upon them; i.e., they ordained above, what they took upon them down below. Greeting, from (Ruth, 2, 4) And he said unto the reapers, the Lord be with you, and there is also a verse (Jud. 6, 12) The Lord is with thee, thou mighty man of valor. To what purpose is the second quotation? Lest one say that Boas did it according to his own opinion and without the consent of heaven. Come, listen! The Lord is with thee, thou mighty man of valor. And concerning tithe, as it is written (Mal. 3, 10) Bring ye the whole tithes into the store-house, that there may be food in My house, and try Me now herewith, saith the Lord of hosts, if I will not open you the windows of heaven, and pour you out a blessing, that there shall be more than sufficient.

Rabbi Yehoshua ben Levi says, “There are three matters that the earthly court did and the heavenly court agreed with them, and these are they: Reading the Scroll [of Esther on Purim]; greeting another with the name of God; and bringing the tithe [to the Temple treasury].” Reading the Scroll, as it is written (Esther 9:27), “The Jews confirmed, and they took upon themselves.” They confirmed above that which they took upon themselves below. Greeting (with the name of God), as it is written (Ruth 2:4), “And presently Boaz came from Bethlehem and said to the harvesters, The Lord is with you.’” And it states (Judges 6:12) “The Lord is with you, mighty man of valor.” What is [the reason for], “And it states?” And if you would say that Boaz acted on his own, but from Heaven, they did not agree with him; come hear [a proof]: “And it states, ‘The Lord is with you, mighty man of valor.’” The bringing of the tithe, as (it is written [II Chronicles 31:5], “When the word spread, the Israelites brought large quantities of grain, wine, oil, honey, and all kinds of agricultural produce, and tithes of all, in large amounts.” And) it is written (Malachi 3:10), “Bring you the [whole] tithe into the storehouse, that there may be food, etc. and I will pour you out a blessing, that there shall be more than sufficiency (ad beli dai).” What is “ad beli dai.”? [Rami bar Rav] (Rav Chama in the name of Rav) said, “Until your lips will be worn out (yivlu) from saying, ‘Enough Dai).’”