Decree, issued by Daniel Brendel von Homburg, Archbishop of Mainz [Present-day Germany]: “All Jews living within the Archbishopric of Mainz are hereby ordered to refrain from entering into any purchase contracts, as well as any loan contracts or similarly usurious agreements, under mandatory punishment for any contravention.”
Schaab, Carl Anton. Diplomatische Geschichte der Juden zu Mainz und dessen Umgebung, mit Berücksichtigung ihres Rechtszustandes in den verschiedenen Epochen [Diplomatic History of the Jews in Mainz and its surroundings, under consideration of their legal situation across the various epochs]. Zabern: Mainz, 1855. Page 182. Researched by Dominik Jacobs 8/6/2020