Targum for Exodus 36:24

וְאַרְבָּעִים֙ אַדְנֵי־כֶ֔סֶף עָשָׂ֕ה תַּ֖חַת עֶשְׂרִ֣ים הַקְּרָשִׁ֑ים שְׁנֵ֨י אֲדָנִ֜ים תַּֽחַת־הַקֶּ֤רֶשׁ הָאֶחָד֙ לִשְׁתֵּ֣י יְדֹתָ֔יו וּשְׁנֵ֧י אֲדָנִ֛ים תַּֽחַת־הַקֶּ֥רֶשׁ הָאֶחָ֖ד לִשְׁתֵּ֥י יְדֹתָֽיו׃

And he made forty sockets of silver under the twenty boards: two sockets under one board for its two tenons, and two sockets under another board for its two tenons.

Targum Jonathan on Exodus