Topic summary
Talmudic

Extracted from the Wikipedia article Talmud.
Commentaries
Many Talmudic passages are difficult to understand, sometimes owing to the use of Greek or Persian loanwords whose meaning had become obscure. A major area of Talmudic scholarship developed to explain these passages and words. Some early commentators such as Rabbenu Gershom of Mainz (10th century) and Rabbenu Ḥananel (early 11th century) produced running commentaries to various tractates. These commentaries could be read with the text of the Talmud and would help explain the meaning of the text. Another important work is the Sefer ha-Mafteaḥ (Book of the Key) by Nissim Gaon, which contains a preface explaining the different forms of Talmudic argumentation and then explains abbreviated passages in the Talmud by cross-referring to parallel passages where the same thought is expressed in full. Commentaries (ḥiddushim) by Joseph ibn Migash on two tractates, Bava Batra and Shevuot, based on Ḥananel and Alfasi, also survive, as does a compilation by Zechariah Aghmati called Sefer ha-Ner.