Reference for Psalms 102:10

כִּי־אֵ֭פֶר כַּלֶּ֣חֶם אָכָ֑לְתִּי וְ֝שִׁקֻּוַ֗י בִּבְכִ֥י מָסָֽכְתִּי׃

For I have eaten ashes like bread, and mingled my drink with weeping,