In moral philosophy, supererogation is the performance of more than what morality demands. A supererogatory act is one that is good, but not morally required.
deontology | demandingness of morality | moral philosophy | normative ethics
https://plato.stanford.edu/entries/supererogation/Heyd, David (2002) Supererogation, Stanford Encyclopedia of Philosophy, November 4 (updated 5 November 2019).
https://plato.stanford.edu/entries/supererogation/
In moral philosophy, supererogation is the performance of more than what morality demands. A supererogatory act is
one that ismorally good, but not morally required.