Prayer to ask for forgiveness for past and future sins

Allahumaghfirli ma qaddamtu wa ma akhartu,
wa ma asraftu, wa asrartu, wa ma a'lantu,
wa ma huwa anta a'lamu bihi minni,
la ilaha illa anta, anta al-muqaddim, wa anta al-muakhir,
la yaghfiru dzunuba illa anta.

O God, please forgive me for which I have done in the past and in the future,
and which I have exceeded in, and which I have done openly, and which I have concealed,
and which You know more than I do,
there is no God but You, You are the Advancer and the Delayer,
there is none who can forgive but You.