Is expiation obligatory for a strong young man who caused the death of a person in a traffic accident, and is he required to fast for two consecutive months or feed sixty poor people, and is it permissible for him to feed if he is capable of fasting?

The ruling concerning one who kills a disbeliever was previously clarified in Fatwa no. 37238, stating that he is required to offer expiation according to the preponderant view. This expiation is the freeing of a believing slave; if he cannot find one, then fasting for two consecutive months; if he is unable to do that, then feeding sixty needy persons, as stated in Fatwa no. 31453. And if someone was able to fast but instead fed (the needy), the expiation is not sufficient for him, and he must offer expiation by fasting again.