A contemporary of Rabbah, Rav Yosef (270 - 333 CE, 3rd generation Amora) became the head of the academy in Pumpedita after Rabbah's death. He was known for his humility and for his mastery of the corpus of Jewish law. While wealthy, Rav Yosef had health issues which brought him blindness and the loss of memory.
The Gemara relates other statements pertaining to Torah scholars and their descendants. Rabbi Parnakh says that Rabbi Yoḥanan says: With regard to anyone who is a Torah scholar, and whose son is a Torah scholar, and whose grandson is a Torah scholar, the Torah will never again cease from his descendants, as it is stated: “And as for Me, this is My covenant…My spirit that is upon you, and My words which I have put in your mouth, shall not depart out of your mouth, nor out of the mouth of your children, nor out of the mouth of your children's children, says the Lord, from now and forever” (Isaiah 59:21).
The Gemara asks: What is the significance of the phrase “says the Lord”? The Gemara answers that the Holy One, Blessed be He, said: I am your guarantor in this matter. The Gemara asks: What is the meaning of the phrase “from now and forever”? The verse mentioned only three generations. Rabbi Yirmeya says: The verse means that from this point forward, after three generations, the Torah returns to its lodging, i.e., the Torah is now ingrained in the family.
The Gemara relates that Rav Yosef fasted forty fasts so that the Torah would become ingrained in his family, and he was read the verse in a dream: “My words…shall not depart out of your mouth.” He fasted an additional forty fasts and he was read: “Shall not depart out of your mouth, nor out of the mouth of your children.” He fasted an additional one hundred fasts. In a dream, he came and was read the conclusion of the verse: “Shall not depart out of your mouth, nor out of the mouth of your children, nor out of the mouth of your children's children.” He said: From this point forward I do not need to fast anymore, as I am now assured that the Torah will return to its lodging.
Questions for Discussion:
1) Why did Rav Yosef feel the need to fast in order to ensure Torah stays within his family?
2) Do you think 3 generations of the same practice is enough to make something "stick" indefinitely? Why does the Talmud suppose this is the case?
3) How do the deeds of our ancestors have an imprint on our lives? What is the mechanism for this imprint?
The Sages raised a dilemma before Rav Ulla: How far must one go to fulfill the mitzva of honoring one’s father and mother? Rav Ulla said to them: Go and see what one gentile did in Ashkelon, and his name was Dama ben Netina. Once the Sages sought to purchase merchandise from him for six hundred thousand gold dinars’ profit, but the key for the container in which the merchandise was kept was placed under his father’s head, and he was sleeping at the time. And Dama ben Netina would not disturb his father by waking him, although he could have made a substantial profit.
Rav Yehuda says that Shmuel says: They asked Rabbi Eliezer: How far must one go to fulfill the mitzva of honoring one’s father and mother? Rabbi Eliezer said to them: Go and see what one gentile did for his father in Ashkelon, and the name of the son was Dama ben Netina. Once the Sages wished to purchase precious stones from him for the ephod [breastplate] of the High Priest for six hundred thousand gold dinars’ profit, and Rav Kahana taught that it was eight hundred thousand gold dinars’ profit. And the key to the chest holding the jewels was placed under his father’s head, and he would not disturb him.
The next year the Holy One, Blessed be He, gave Dama ben Netina his reward, as a red heifer was born in his herd, and the Jews needed it [for the ritual of purification that can only be done with ashes from the extremely rare red heifer]. When the Sages of Israel came to him he said to them: I know, concerning you, that if I were to ask for all the money in the world you would give it to me. But I ask only that money that I lost due to the honor of Father.
And Rabbi Ḥanina says: And if this is related about one who is not commanded by the Torah to honor his father, as Dama was a gentile, and nevertheless when he performs the mitzva he is given this great reward, all the more so is one rewarded who is commanded to fulfill a mitzva and performs it. As Rabbi Ḥanina says: Greater is one who is commanded to do a mitzva and performs it than one who is not commanded to do a mitzva and performs it.
Rav Yosef, who was blind, said: At first I would say: If someone would tell me that the halakha is in accordance with the opinion of Rabbi Yehuda, who says: A blind person is exempt from fulfilling the mitzvot, I would make a festive day for the rabbis, as I am not commanded and yet I perform the mitzvot. This means my reward is very great. Now that I have heard that which Rabbi Ḥanina says: Greater is one who is commanded to do a mitzva and performs it than one who is not commanded to do a mitzva and performs it, on the contrary: If someone would tell me that the halakha is not in accordance with the opinion of Rabbi Yehuda, and a blind person is obligated in mitzvot, I would make a festive day for the rabbis.