Reference for Psalms 44:20

כִּ֣י דִ֭כִּיתָנוּ בִּמְק֣וֹם תַּנִּ֑ים וַתְּכַ֖ס עָלֵ֣ינוּ בְצַלְמָֽוֶת׃

Though Thou hast crushed us into a place of jackals, and covered us with the shadow of death.