The Sefer Oklah we-Oklah is an old Masoretic work in which the notices and rules of the Masorah are collected; it consists of groups of rare words or of certain peculiarities of the text arranged either alphabetically, or in the order of the books of the Bible, or according to some other principle, and contains also brief rules and notes on various phenomena found in the original text of the Bible. This work, whose author is unknown, takes its title from the first two words of the opening passage, which is an alphabetical list of words occurring only twice in the Bible, in one passage without the prefixed waw and in the other with it, the first of these pairs of words being oklah ( אָכְלָה ) from 1 Samuel 1:9 and we-oklah ( וְאָכְלָה ) from Genesis 27:19.