Mar. 17, 1310

“Diocesan Synod of Strasbourg” held under Bishop Johann I [Present-day France; Free Imperial City of Strasbourg]: “We remind and admonish the spiritual dignitaries and alienators of church properties […]: Furthermore, because chalices are sometimes pawned off to Jews, it has been said, that a certain rudeness of the worst kind has been committed by the enemies of (the cross of) Christ to disgrace the Christian belief. Therefore, in order to avoid such detrimental hazards, we command that none of our subordinates shall from now on arrogate themselves to pawn off any inaugurated chalices to Jews* or to agree to pawn them off or allow them to be pawned off under the punishment of excommunication. Furthermore, we want those offenders, as (we have) put forward in this letter, to be automatically subjected to the punishment of excommunication, and we decide that any such deposits are deemed ineffective.” [Additional Comment from the source: “In the present copy of the 14th century, the word ‘Judeis’ is missing, while in the equated provisions of the 1341 and 1345 of the same Handwritten manuscript, it is included.”]
Medieval Ashkenaz: Corpus der Quellen zur Geschichte der Juden im Spätmittlealterlichen Reich; Synoden und Konzilien 1, Nr. 8 (“Corpus of the Sources on the History of Jews in the Late Middles Ages; Synods and Councils 1, No. 8”). Researched and Translated by Ziba Shadjaani 2/18/2017