אִם־שָׁכַ֗בְתִּי וְאָמַ֗רְתִּי מָתַ֣י אָ֭קוּם וּמִדַּד־עָ֑רֶב וְשָׂבַ֖עְתִּי נְדֻדִ֣ים עֲדֵי־נָֽשֶׁף׃
Когда я ложусь, я говорю: 'Когда я встану?' Но ночь длинна, и я полон шатаний туда и обратно на рассвет дня.
Rashi
and the evening depart When will it become light and when will the time of arising come, and when will the evening depart? [The word מדד ] is an expression of (Gen. 31:40) “and sleep was banished (ותדד).” The “mem” is a defective radical, as in מאמר, statement; משמר, watch.
Rashi
And I was sated with restlessness I was sated with restlessness on my bed by day until twilight, because, due to the torments I could not sleep until the twilight of day, since my flesh was clothed with worms.