וְעָשִׂ֥יתָ בְרִיחִ֖ם עֲצֵ֣י שִׁטִּ֑ים חֲמִשָּׁ֕ה לְקַרְשֵׁ֥י צֶֽלַע־הַמִּשְׁכָּ֖ן הָאֶחָֽד׃
And thou shalt make bars of acacia-wood: five for the boards of the one side of the tabernacle,
Read midrashic interpretation of Exodus 26:26: and classical rabbinic exegesis.