Sephardic Jews in the Netherlands of Sephardic Jewry in Amsterdam, the Mahamad also closely controlled the process of re-judaization - that is helping those whose families had been secretly living as Jews while being outwardly Catholic return to a full Jewish life. In this process, several individuals rejected Rabbinic Judaism or advanced ideas outside of the norms of Judaism at that time and were disciplined by the Mahamad through the process of herem, which could be anything from denial of Torah honors to an outright ban on the individual. The most famous of those to receive a full ban herem was philosopher Baruch Spinoza, whose
Sephardic law and customs Lurianic-Sephardic rite extended even to countries outside the Ottoman sphere of influence such as Iran, where there were no Spanish exiles. (The previous Iranian rite was based on the Siddur of Saadia Gaon.) The main exceptions to this tendency were: There were also Kabbalistic groups in the Ashkenazic world, which adopted the Lurianic-Sephardic ritual, on the theory of the thirteenth gate mentioned above. This accounts for the "Nusach Sefard" and "Nusach Ari" in use among the Hasidim, which is based on the Lurianic-Sephardic text with some Ashkenazi variations. From the 1840s on a series of prayer-books was published in Livorno,