[1828] i.e., as a result of both their own righteous deeds and the limitless generosity of Allāh (subḥānahu wa taʿālā) . Another meaning is "a gift calculated [to be adequate]."
[1829] None of Allāh's creatures can plead with Him on the Day of Judgement except by His permission.
[1831] i.e., the deeds he did in this world, which await him in the Hereafter.