Commentaire sur Nahoum 2:10: Rachi, Rambam, Ibn Ezra et plus

Plunder silver! Plunder gold!—You who come upon Nineveh.

And there is no end—There is no count.

to the treasures Heb. לְתְּכוּנָה, to their treasures. [It is called תְּכוּנָה] because the silver and gold placed in the treasury is placed there with a count, as you say (II Kings 12:12): “The counted (הַמְתֻכּן) money.” [following Jonathan]