Targum for Exodus 27:1

וְעָשִׂ֥יתָ אֶת־הַמִּזְבֵּ֖חַ עֲצֵ֣י שִׁטִּ֑ים חָמֵשׁ֩ אַמּ֨וֹת אֹ֜רֶךְ וְחָמֵ֧שׁ אַמּ֣וֹת רֹ֗חַב רָב֤וּעַ יִהְיֶה֙ הַמִּזְבֵּ֔חַ וְשָׁלֹ֥שׁ אַמּ֖וֹת קֹמָתֽוֹ׃

And thou shalt make the altar of acacia-wood, five cubits long, and five cubits broad; the altar shall be four-square; and the height thereof shall be three cubits.

Targum Jonathan on Exodus