וְרֹ֤חַב הֶֽחָצֵר֙ לִפְאַת־יָ֔ם קְלָעִ֖ים חֲמִשִּׁ֣ים אַמָּ֑ה עַמֻּדֵיהֶ֣ם עֲשָׂרָ֔ה וְאַדְנֵיהֶ֖ם עֲשָׂרָֽה׃
And for the breadth of the court on the west side shall be hangings of fifty cubits: their pillars ten, and their sockets ten.
Read kabbalistic (mystical) interpretation of Exodus 27:12: and classical mystical sources.