תהילים יח:מג פירוש: רש״י

Then I ground them Heb. ואשחקם, an expression of crushing.

I did pour them like loose mud, which is not thick, as (in Gen. 42:35): “when they emptied (מריקים) their sacks”; (in Jer. 48:11), “has not been poured (הורק) from one vessel to another vessel.”