The first part is the encyclopedia, the first work to publish all of the Written Law (the Pentateuch) and the Oral Teachings (Talmud and Midrashim) side by side. Kasher published from manuscript form several previously unknown midrashic works such as the Midrash Teiman. The latter part consists of the extensive annotations and addendum in which he used his awareness of variant texts as well as his almost encyclopedic knowledge in all Jewish works to clarify many obscure points in the Talmud and the Rambam's commentary.