Related for Shekalim 6:1
שְלשָׁה עָשָר שוֹפָרוֹת, שְלשָה עָשָר שֻלְחָנוֹת, שְׁלשׁ עֶשְׂרֵה הִשְׁתַּחֲוָיוֹת, הָיוּ בַּמִקְדָּשׁ. שֶׁל בֵּית רַבָּן גַּמְלִיאֵל וְשֶׁל בֵּית רַבִּי חֲנַנְיָא סְגַן הַכֹּהֲנִים הָיוּ מִשְׁתַּחֲוִין אַרְבַּע עֶשְׂרֵה. וְהֵיכָן הָיְתָה יְתֵרָה, כְּנֶגֶד דִּיר הָעֵצִים, שֶׁכֵּן מָסֹרֶת בְּיָדָם מֵאֲבוֹתֵיהֶם שֶׁשָּׁם הָאָרוֹן נִגְנַז:
In the Temple there were thirteen shofroth [receptacles, narrow on top and broad on the bottom and bent like a shofar, because of the deceivers, that they not be able to put their hand in, seeming to be giving — and taking], and thirteen tables [Later it is explained why thirteen shofroth and thirteen tables and where they were placed], and thirteen bowings [Later it is explained where]. Those of the house of R. Gamliel and the house of R. Chaninah, the adjutant high-priest, performed fourteen bowings. And where was the additional one? Towards the woodshed [a lishkah where they stored all the wood for the (altar) wood pile, in the northeast corner of the ezrath nashim]; for they had a tradition from their forefathers that the ark was secreted there. [King Yoshiyahu instructed that it be secreted in the circuitous subterranean vaults that King Solomon constructed when he built the Temple, knowing that it would be destroyed, viz. (II Chronicles 35:3): "And he said to the Levites who instructed all of Israel … Place the holy ark in the house that Solomon built, etc." And with it were secreted the staff of Aaron, the jar of manna, and the flask of anointing oil.]