תהילים נו:ט פירוש: רש״י

You counted my wanderings You know the number of the places to which I wandered, to flee.

place my tears in Your flask Place my tears in Your flask, and let them be preserved before You.

Is it not in Your accounting Place them in Your accounting, to count them with the rest of my troubles. Menachem, however, associated it (p. 128) as an expression of an actual book.