Commentary: Benefits and Issues: The benefit of frequent seeking of forgiveness (istighfar) is that sins will continue to be forgiven, and these words, due to being the remembrance (dhikr) of Allah, will continue to be counted among good deeds. That is, through istighfar, one can hope for forgiveness on the Day of Judgment.
Source: Commentary on Sunan Ibn Mājah by Mawlānā ‘Atā’ullāh Sājid, Page: 3818