Commentary for Berakhot 18:31
דאמר ר' שמואל בר נחמני אמר רבי יוחנן
For R. Samuel b. Nahmani said in the name of R. Jonathan:
Abraham Cohen Footnotes to the English Translation of Masechet Berakhot
So M. which is to be preferred to edd. : Johanan, since R. Jonathan was his teacher.
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