Reference for Eruvin 145:14

והרי נותן את עירובו בתוך אלפים אמה ואתי וביית בביתיה דמשחינן ליה תחומא מעירוביה

or from their country quarters?<span class="x" onmousemove="('comment',' Where they have their meals, in agreement with Rab.');">⁴¹</span> He replied: We measure it from the schoolhouse.<span class="x" onmousemove="('comment',' Because it is the place where their nights are spent, in agreement with the view of Samuel supra.');">⁴⁰</span> Behold, [the first objected], the case of the man who deposits his 'erub within two thousand cubits<span class="x" onmousemove="('comment',' From his town.');">⁴²</span> and comes to take his night's rest at his house whose Sabbath limit is measured from his 'erub!<span class="x" onmousemove="('comment',' And not from the place where his night is spent. How then could it be maintained that the students' Sabbath limit is measured from their schoolhouse because they spend their nights there?');">⁴³</span>

Jastrow

Jastrow