The Talmud Bavli disagrees on how to view the said stringency in terms of it being categorized as a minhag or a halacha, Ravah -in dialoguh with his Mentor Rav Pappa, abstained from viewing it as an halacha with stating that it is in fact geo-location based with non-conforming communities fully entitled not to comply.
He led the Talmudical academy in Nehardea (also called Naresh, or Nareš), close to Sura, during the fifth generation of Babylonian amoraim.
After Raba's death, Papa of Naresh, another of his pupils, founded a college in Naresh, near Sura, which, for the time being, interfered with the growth of the Sura school; but after Papa's death, in 375, the college at Sura regained its former supremacy.
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