'Ashes' in the Bible

O daughter of my people [says Jeremiah],Clothe yourself in sackcloth and wallow in ashes;Mourn [aloud] as for an only son,A most bitter cry [of sorrow and regret],For suddenly the destroyer will come upon us [on both prophet and people].

“Wail, you shepherds, and cry;And roll in ashes, you masters of the flock.For the days of your slaughter and of your dispersions have come in full,And you will fall and be broken into pieces like a choice vessel.

And the whole valley (Hinnom) of the dead bodies and [the hill] of the ashes [long dumped there from the temple sacrifices], and all the fields as far as the brook Kidron, to the corner of the Horse Gate toward the east, shall be holy to the Lord. It (the city) will not be uprooted or overthrown anymore to the end of the age.”

They also took away the pots [for carrying away ashes] and the shovels and the snuffers and the bowls and the spoons and all the bronze articles used in the temple service.