וּמִן־הַדָּ֞ם יִתֵּ֣ן ׀ עַל־קַרְנֹ֣ת הַמִּזְבֵּ֗חַ אֲשֶׁר֙ לִפְנֵ֣י יְהוָ֔ה אֲשֶׁ֖ר בְּאֹ֣הֶל מוֹעֵ֑ד וְאֵ֣ת כָּל־הַדָּ֗ם יִשְׁפֹּךְ֙ אֶל־יְסוֹד֙ מִזְבַּ֣ח הָעֹלָ֔ה אֲשֶׁר־פֶּ֖תַח אֹ֥הֶל מוֹעֵֽד׃
他要把一些血抹在會幕中、在永恆者面前的壇的四角上；其餘所有的血，他要倒在會幕門口燔祭壇的底座。
Mishneh Torah, The Chosen Temple
The four corner-pieces of the altar, its base, and its squareness are all essential and any altar that does not have corner-pieces, a base, a ramp, and squareness is invalid for they are all essential, however its length, width, and height are not essential as long as it is not less than one cubit [wide] by once cubit [long] by three cubits [high] like the pyre-space of the Altar in the desert.