Midrasz do Izajasza 55:2

R. Idi, the father of R. Jacob b. Idi, had the habit of being on the road for three months, and one day in college. The students of the college called him "The one-day student." He soon became discouraged, applying the following verse to himself (Job 12, 4) I am one that is a laughing-stock to his neighbor, a man that called upon God, and He answered him. R. Jochanan then said to him: "I pray thee, do not cause the Rabbis to be punished [by Heaven on accoimt of you]." He thereupon lectured: (Is. 58, 2) Yet Me do they ever seek day by day, and to know My ways do they always desire. Do they then seek only by day, and not by night? This is to teach us that he who studies the Torah even one day in the year. Scripture considers it as if he had studied the whole year; and so also does the passange concerning evil compensation read (Num. 14, 34) After the number of days in which ye spied out the lands, forty days, yea, each one day for a year, shall ye bear for your iniquities, for forty years. Did they sin forty years, is it not a fact that they sinned but forty days? But this is to teach us that he who violates but one command, and this once in a year, the Scripture regards it as though he transgressed the whole year.

"And you shall take (acquire) for yourselves on the first day" (Leviticus 23:40). Rabbi Abba bar Kahana opened [his discourse]: "'Accept my discipline rather than silver' - accept the discipline of Torah rather than silver. 'Why do you weigh money for what is not bread' (Isaiah 55:2) - why are you weighing money for the Children of Esav for what is not bread? Since you did not sate yourselves with the bread of Torah. 'Your toil is for what does not satisfy' (Isaiah 55:2) - why are you toiling, and the nations of the world satiated without satiation? Since you did not satiate yourselves from the wine of Torah, as it is written (Proverbs 9:5), 'and drink the wine that I have mixed.'" Rabbi Berakhiah and Rabbi Chiya his father said in the name of Rabbi Yose ben Nehoria, "It is written (Jeremiah 30:20), 'And I will remember all who press him' - even charity collectors - except for the wage of scribes and teachers of Mishnah who only take the wage of their idleness alone. But there is no creature that can give the wage of one thing of the Torah [commensurate to] its reward." It was taught, "The sustenance of a man is fixed from Rosh Hashanah, except for what he expends [for] Shabbat, holidays, Rosh Chodesh and what the infants take to the house of their teacher - if he adds [to this], it is added to him; if he lessens, it is lessened from him." Rabbi Yochanan was travelling, he left from Tiveria [to go] to Tsipporin, and Rabbi Chiya bar Abba was helping him. They reached a plot of farmland. [Rabbi Yochanan] said, "This farmland was mine, but I sold it in order to acquire Torah." They reached one that was a vineyard. He said, "This vineyard was mine, but I sold it in order to acquire Torah." They reached one that was an olive grove. He said, "This olive grove was mine, but I sold it in order to acquire Torah." Rabbi Chiya started to cry. Rabbi Yochanan said, "Why are you crying?" He said to him, "Since you did not leave anything for your old age." He said to him, "Is what I did light in your eyes, that I sold something created in six days and purchased something that was given over forty days, as it is stated (Exodus 34:28), 'And he was there with the Lord forty days and forty nights'; and it is written (Deuteronomy 9:9), 'and I dwelt on the mountain forty days and forty nights.'" When Rabbi Yochanan [died], his generation read about him (Song of Songs 8:7), "if a man offered all the wealth of his home for love" - as Rabbi Yochanan loved the Torah - "he would surely be scorned." When Rabbi Hoshaya, the man of Tirya [died], they saw his bier flying in the air; and his generation read about him (Song of Songs 8:7), "if a man offered all the wealth of his home for love" - as the Holy One, blessed be He, loved Abba Hoshaya, the man of Tirya - "he would surely be scorned." When Rabbi Elazar beRabbi Shimon [died], his generation read about him (Song of Songs 3:6), "Who is she that comes up from the desert like columns of smoke, in clouds of myrrh and frankincense, from all the powders of the merchant?" What is [the understanding of] "from all the powders of the merchant?" Rather [it is] since he read and studied, was a lyricist and an orator. Rabbi Abba bar Kahana said "You learn the reward of purchasing from the reward of purchasing: About Egypt, it is written (Exodus 12:22), 'And acquire a bunch of hyssop.' What is its price? Four small coins. But it caused Israel to possess the spoils of the [Reed Sea], the spoils of Sichon and Og and the spoils of [the] thirty-one kings [of Canaan]. All the more so [is this true] of a lulav, which can become a man's for a little money and has several commandments with it. Hence Moshe warns Israel and says to them (Leviticus 23:40), 'And you shall take (acquire) for yourselves on the first day.'"