I Kings 7:43 Midrash

וְאֶת־הַמְּכֹנ֖וֹת עָ֑שֶׂר וְאֶת־הַכִּיֹּרֹ֥ת עֲשָׂרָ֖ה עַל־הַמְּכֹנֽוֹת׃

and the ten bases, and the ten lavers on the bases;