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On the sign:
אבן חופה בדרום אשכנז נהגו לערוך את החופה בחצר בית הכנסת. אבן החופה הייתה מותקנת בקיר חצר בית הכנסת ואליה זרק החתן את כוס האירוסין אחר שבני הזוג שתו ממנה. אחת עשרה אבני חופה נשתמרו מכ-300 אבנים שהיו באזור אבן חופה זו זיכרון ליהדות מפוארת זו
The Chuppah stone with the inscription "Kol Sasson and Kol Simcha, Kol Chatan and Kol Kala (the voice of joy and the voice of gladness, the voice of the bridegroom and the voice of the bride)" was photographed that day Click for a larger image
Translation of the text on the sign: Chuppah Stone In southern Ashkenazi, the Chuppah was held in the courtyard of the synagogue. The Chuppah stone was mounted on the wall of the synagogue courtyard and into it the groom threw the engagement glass after the couple had drunk from it. Eleven Chuppah stones have been preserved from about 300 stones that were in the area This Chuppah stone is a reminder of this glorious Judaism