Rashi on Terumah 27:1

English: ועשית את המזבח וגו׳ ושלש אמות קמתו AND THOU SHALT MAKE AN ALTAR etc. AND THE HEIGHT THEREOF SHALL BE THREE CUBITS — These words should be understood as they are written (i. e. to mean exactly what they say — that its height was three cubits); this is the opinion of R. Jehudah. R. José, however, says: it is stated here, “[the altar shall be] square” and it is stated with reference to the inner (the golden) altar, (Exodus 30:2) “square [shall it be].” How was it there (in the case of the latter)? Its height was twice its length (“a cubit the length thereof, and a cubit the breadth thereof, . . . and two cubits the height thereof”)! So, also, here: the height shall be twice its length, i. e. ten cubits. And if you ask, how, then, do I explain the words and three cubits the height thereof?” I