וַיֹּ֣אמֶר לַ֠לְוִיִּם המבונים [הַמְּבִינִ֨ים] לְכָל־יִשְׂרָאֵ֜ל הַקְּדוֹשִׁ֣ים לַיהוָ֗ה תְּנ֤וּ אֶת־אֲרוֹן־הַקֹּ֙דֶשׁ֙ בַּ֠בַּיִת אֲשֶׁ֨ר בָּנָ֜ה שְׁלֹמֹ֤ה בֶן־דָּוִיד֙ מֶ֣לֶךְ יִשְׂרָאֵ֔ל אֵין־לָכֶ֥ם מַשָּׂ֖א בַּכָּתֵ֑ף עַתָּ֗ה עִבְדוּ֙ אֶת־יְהוָ֣ה אֱלֹֽהֵיכֶ֔ם וְאֵ֖ת עַמּ֥וֹ יִשְׂרָאֵֽל׃
And he said unto the Levites that taught all Israel, that were holy unto the LORD: ‘Put the holy ark in the house which Solomon the son of David king of Israel did build; there shall no more be a burden upon your shoulders; now serve the LORD your God, and His people Israel.
Mishnah Shekalim
There were in the Temple thirteen chests, thirteen tables and thirteen prostrations. [Members] of the household of Rabban Gamaliel and of Rabbi Hananiah the chief of the priests used would prostrate fourteen [times. And where was the additional [prostration]? In front of the wood storage yard, for they had a tradition from their forefathers that the Ark was hidden there.