Talmud for Eruvin 113:6
מאי סביב סביב דקרנות דאי לא תימא הכי גבי עולה דכתיב (ויקרא א, ה) וזרקו (בני אהרן) את הדם על המזבח סביב ה"נ סביב ממש אלא מאי סביב סביב דקרנות ה"נ מאי סביב סביב דקרנות
A quarter of the area of the corners.<span class="x" onmousemove="('comment',' No open space being allowed along the limits. Cf. previous note, the Tosaf. cited and Rashi s.v. a.l. The area of each corner being 4,000,000 sq. cubits and the area of the open space in each corner being 1,000,000 sq. cubits the latter area equals (1,000,000/4,000,000 =) 1/4 'a quarter' of that of the former in each corner. The total area of the corners equals 4 X 4,000,000 while the total area of open spaces in these corners equals 4 X 1,000,000 the proportion of the latter to the former is, therefore, 4 X 1,000,000/4 X 4,000,000 = 1/4 which is also 'a quarter'.');"><sup>8</sup></span> Said Rabina to R'Ashi: Is it not written i Scripture: 'round about'?<span class="x" onmousemove="('comment',' Num. XXXV, 4. How then could it be maintained that the open spaces were restricted (cf. prev. n.) to the corners only?');"><sup>9</sup></span> - By 'round about' the corners were meant - For, if you were not to admit this, would you also contend that the expression.