Translation of "Buy a pig in a poke" in German

The Member States can surely not be expected to renounce powers and then be obliged to buy a "pig in a poke", whilst being kept in the dark about details and implications.
Den Mitgliedstaaten kann doch kei­nesfalls zugemutet werden, daß sie Kompetenz abgeben und dann gezwungen sind, ohne Kenntnis der Details und Konsequenzen "die Katze im Sack zu kaufen".
TildeMODEL v2018

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