וּשְׁנֵ֤י קְרָשִׁים֙ תַּעֲשֶׂ֔ה לִמְקֻצְעֹ֖ת הַמִּשְׁכָּ֑ן בַּיַּרְכָתָֽיִם׃
And two boards shalt thou make for the corners of the tabernacle in the hinder part.
Targum Jonathan on Exodus
And two boards shalt thou make at the corners of the tabernacle at their ends.