drawn up by Amram ben Sheshna of Sura Academy in Sawad, the Abbasid Caliphate, an area known as "Babylonia" in Jewish texsts, about 850 CE (Seder Rav ʿAmram). Half a century later, Saadia Gaon, also of Sura, composed a siddur (see Siddur of Saadia Gaon), in which the rubrical matter is in Judeo-Arabic. These were the basis of Simhah ben Samuel of Vitry's 11th century Machzor Vitry, which was based on the ideas of his teacher, Rashi. Another formulation of the prayers was that appended by Maimonides to the Book of Love in his Mishneh Torah: this forms the basis of the Yemenite liturgy, and has had some influence on other rites. From this point forward all Jewish prayerbooks had the same basic order and contents. Two authoritative versions of the Ashkenazi siddur were those of Shabbetai Sofer in the 16th century and Seligman Baer in the 19th century; siddurim have also been published reflecting the views of Jacob Emden and the Vilna Gaon. Different Jewish rites There are differences among, amongst others, the Sephardic (including Spanish and Portuguese and Mizrachim), Teimani (Yemenite), Chasidic, Ashkenazic (divided into German, Polish and other European and eastern-European rites), Bené Roma or Italkim, Romaniote (Greek, once extending to Turkey, Crimea and the southern Italian peninsula) and also Persian-, Kurdish-, Bukharian-, Georgian-, Mountain Jewish-, Ethiopian- and Cochin-Jewish liturgies. Most of these are slight differences in the wording of the prayers; for instance, Oriental Sephardic and some Hasidic prayer books state "חננו מאתך חכמה בינה ודעת", "Graciously bestow upon us from You wisdom (ḥochmah), understanding (binah) and knowledge (daat)", in allusion to the Kabbalistic sefirot of those names, while the Nusach Ashkenaz, as well as Western Sephardic and other Hasidic versions retain the older wording "חננו מאתך דעה בינה והשכל", "Graciously bestow upon us from You knowledge, understanding, and reason". In some cases, however, the order of the preparation for the Amidah is drastically different, reflecting the different halakhic and kabbalistic formulae that the various scholars relied on in assembling their prayer books, as well as the minhagim, or customs, or their locales. Some forms of the Sephardi rite are considered to be very overtly kabbalistic, depending on how far they reflect the ritual of Isaac Luria (see Lurianic Kabbalah). This is partly because the Tetragrammaton frequently appears with varying vowel points beneath the letters (unpronounced, but to be meditated upon) and different Names of God