יחזקאל לט:טו פירוש: רש״י

And when they that pass through the land shall pass Wayfarers who see a human bone will construct a marker next to it as a sign that there is a bone of a dead body there, in order that wayfarers and those who prepare ritually pure food should stay away from it.

until the men of continuous employment, designated to search, will come and bury it.