Along with the sealing of the Talmud, by Ravina II (at Sura city), the era of the Savora sages has began (years 499-589; ד'ר"ס - ד'שמ"ט Hebrew calendar), in which most part of that period, proper studying on regular basis did not take place in Sura Academy (only in Pumbedeita), due to pogroms against the Jewish community in Sura.