The poetry of the synagogue is furthermore deeply indebted to Bonfils for the introduction of the piyyuṭim into the prayers, in face of great opposition. Of his many piyyuṭim, the best-known is that written for "Shabbat HaGadol" (the Sabbath before Passover), beginning with the words "Elohei haruchot," and containing the rules for the Passover-cleaning ("bi'ur") and the narrative service for the evening.
The synagogue's liturgical poetry owes a significant debt to Bonfils, who successfully integrated piyyuṭim into the prayers despite opposition. One of his most famous works is a piyyuṭ for "Shabbat HaGadol," which begins with "Elohei haruchot" and outlines Passover-cleaning procedures and an evening narrative service.