“‘This custom is that every adherent of the Shiite sect, male as well as female, must, after every “toilet” unfailingly wash his sex organs. For this purpose, every family has the necessary appurtenances considered among us even as the most important, consisting of a special vessel, a particular kind of bowl called “Ibrkh”. And the richer the family the more of these bowls they must have, since such a bowl must at once and without fail be put at the disposal of every newly arrived guest. BTG XLII