Reference for Eruvin 199:1
משום דהוי דירה שתשמישה לאויר וכל דירה שתשמישה לאויר אין מטלטלין בה יתר מבית סאתים:
- Because it is a dwelling-place that serves only the outside air,<span class="x" onmousemove="('comment',' The watchmen use it only during the season when they are engaged in their duties in the fields and vineyards in the open air. No one uses the area tinder a tree as an ordinary habitation.');"><sup>1</sup></span> and no movement of objects is permitted in a dwelling-place whose only function is that of serving the outside air, if its area was greater than two beth se'ah. IF ITS ROOTS ARE HIGH ABOVE THE GROUND etc. It was stated: If the roots of a tree descended from a level that was above three handbreadths into one that was lower than three handbreadths,<span class="x" onmousemove="('comment',' Sc. they began to bend downwards after they had grown to a high above three handbreadths from the ground.');"><sup>2</sup></span> Rabbah ruled: It is permitted to use them, while R'Shesheth ruled: It is forbidden to use them.'