Halakhah for Eruvin 46:15
נזרע רובו אמר רב הונא בריה דרב יהושע לא אמרן אלא יותר מבית סאתים אבל בית סאתים מותר
is fenced round for dwelling purposes, then if the greater part of it is sown [with seed] it is regarded as a garden<span class="x" onmousemove="('comment',' Which people do not use as a dwelling place.');"><sup>25</sup></span> and it is forbidden [to carry any objects within it],<span class="x" onmousemove="('comment',' Even in the part that was not sown; because its status is merged in that of the greater part.');"><sup>26</sup></span>
Sefer HaChinukh
And since we explained the shekel-coins, it is fitting that we explain how much is a chomer: You should know that the chomer is a measure that is [also] called a kor. And a kor is two letech, and a letech is fifteen seah. It comes out that a chomer is thirty seah, which is ten eipah - as an eipah is three seah. It is a well-known thing and we also already knew it from our Rabbis, may their memory be blessed, (Eruvin 23b) that a place that has fifty ells by fifty ells is a beit seah - meaning that it is [what contains what grows from] a seah of barley - and that is two thousand five hundred [square ells] by arithmetic (multiplication). It comes out that a place that is fitting for the seed of a chomer of barley - which is thirty seah - is seventy-five thousand ells by arithmetic.
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