Rif Yoma 3a {Yoma 78b continues; 82a}

HIDE/SHOW IMAGE
3a

{Yoma 78b continues}
Anything which is because of scorpions is permitted.

{Yoma 82a}
Mishna:
Children are not made to fast on the Day of Atonement, but when one or two years {before they become obligated} they are accustomed {mechanchin} to do it, so that they become habituated to obey the religious commandments.

Gemara:
Now that we have been informed that two years before they are accustomed {mechanchin} to do it, "a year before" do we need?
Rav Chisda said: This is no question. Here is by a sick person, and here is by a healthy person.

Rav Huna said: An eight year old and a nine year old, you accustom him {to fast} for hours. A ten year old and an eleven year old, they finish {the fast} Rabbinically. A twelve year old, they finish the fast Biblically.
And Rav Nachman said: A nine year old and a ten year old, you accustom him {to fast} for hours. An eleven year old, he they finish the fast Rabbinically. A twelve year old, they finish the fast Biblically.
And Rabbi Yochanan said: A ten year old and an eleven year old, you accustom him {to fast} for hours.