Refresh ONLY master WHEN DETAIL ADDS its RECORD

how to refresh master form if detail grid is navigated back into grid from its form after data entry?
i have a master form and its detail is a grid with form linked to grid. (when user adds record in detail , and after adding comes back to grid), at this time after new record gets added in detail, i want master to reload (but not the detail, detail should not refresh)

sc_redir (target master iframe) might work, but not sure .

goal is master should reload when grid reloads (or navigates back from grid-form to grid)