تفسير : (man is (self)-destroyed) the disbeliever, i.e. 'utbah ibn abi lahab, is cursed: (how ungrateful!) what has made him a disbelieve in allah and in the stars of the qur'an, i.e. in the star when it sets; it is also said that this means: how extreme is his disbelief.
Jalāl al-Dīn al-Maḥallī
تفسير : perish man!, accursed be the disbeliever! what has made him ungrateful? (an interrogative statement meant as a rebuke) — what has driven him to disbelief?