Study Yoma folio 82A with parallel Hebrew-English text, traditional commentary, and modern study tools. Free access to Babylonian Talmud online.
Mishnah: With regard to the children, one does not afflict them by withholding food on Yom Kippur; however, one trains them one year before or two years before they reach majority, by means of a partial fast lasting several hours, so that they will be accustomed to fulfill mitzvot.
Talmud: The Talmud asks about the wording of the Mishnah: Since it is stated that one trains children two years before their maturity, is it necessary to say that one trains them one year before? This expression in the Mishnah is superfluous. Rav Ḥisda said: This is not difficult. This statement
Rav Huna said: One trains a healthy child of 8 years and 9 years to fast for several hours; at 10 years and 11 years, they complete the fast by rabbinic law; at 12 years they complete the fast by Torah law. This applies to girls who reach maturity and become obligated in mitzvot at age 12. And Rav
§ We learned in the Mishnah: With regard to the children, one does not afflict them by withholding food on Yom Kippur; however, one trains them for one year before or two years before they reach maturity. Granted, this makes sense according to the opinion of Rav Huna and Rav Naḥman, who hold that
But according to R' Yoḥanan, who holds that there is no rabbinic law to complete the fast, this is difficult. In his opinion, what is the difference between one year before and two years before? R' Yoḥanan could have said to you: What is the meaning of one year or two years? One year is referring