Note 50 — CONTINUATION OF THE TALE OF KING OMAR BIN AL-NU'UMAN AND HIS SONS SHARRKAN AND ZAU AL-MAKAN.

i.e. which fit into sockets in the threshold and lintel and act as hinges. These hinges have caused many disputes about how they were fixed, for instance in caverns without moveable lintel or threshold. But one may observe that the upper projections are longer than the lower and that the door never fits close above; so by lifting it up the inferior pins are taken out of the holes. It is the oldest form and the only form known to the Ancients. In Egyptian the hinge is called Akab = the heel, hence the proverb Wakaf' al-báb alá 'akabih; the door standeth on its heel; i.e. every thing in proper place.