Reference for Menachot 64:10

של בית מונבז המלך היו עושין בפונדקותיהן כן זכר למזוזה

and it is no fulfilment of the precept. The household of King Monobaz used to do so when staying at a hostel,<span class="x" onmousemove="('comment',' Since there is no obligation to affix mezuzoth to a temporary abode.');">¹⁴</span> merely in remembrance of the mezuzah.

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