רִיבּוּעַ ², Succ. 8ᵃ, v. עִיגּוּלָא. Erub. 57ᵃ; B. Bath. 101ᵇ, a. e. כל אמתא בר׳ וכ׳, v. אֲלַכְסוֹן. Erub. 23ᵇ איכא … ר׳ דרבעוה רבנן (Ms. M. ר׳ דרבנן) the difference between them refers to their attitude concerning the square which the (other) Rabbis adopt as a standard (seventy and a fraction by seventy and a fraction, Mish. ib. II, 5); [differ. interpret. in Tosaf. a. l.; reference to Mish. ib. IV, 8].