Canon XL.  (Greek xliii.) Concerning the non-frequenting of taverns by the clergy, except when travelling. That the clergy are not to enter taverns for eating or drinking, nor unless compelled to do so by the necessity of their journey. Notes. Ancient Epitome of Canon XL. A cleric on a journey may enter a tavern, otherwise not. This canon is Canon xxvj. of the Synod of Hippo, a.d. 393.