Rav Nachman bar Yitzchak (Hebrew: רב נחמן בר יצחק; died 356 CE) was a Babylonian rabbi, of the fourth and fifth generations of amoraim.
[7] He later went to Sura, where Rav Nahman bar Chisda drew particular attention to him and frequently repeated his responsa in the beit midrash.
[9] He contributed to halakhah chiefly by collecting, arranging, and transmitting the teachings and decisions of his predecessors, which were thus saved from oblivion.
He also employed mnemonics to facilitate memorizing the halakhot which he had arranged,[10] thus beginning the redaction of the Talmud.
He distinctly recognized his position regarding halakhah, saying of himself "I am neither a sage nor a seer, nor even a scholar as contrasted with the majority.
[15] When the interpretations by others deviate from the Masoretic vocalization, he attempts to show that reference to the written form of the word in question allows such varying explanations.