What is abrogation?
Abrigation is a central tenant of Islam that later revelations entirely supplant earlier. Thus all the “peaceful” teachings of Mohammad were abrogated by later warring teachings.
In the same way the predicted Muslim leader who is essentially their messiah would be free to abrogate and earlier teaching.
More generally, in legal matters well beyond Islam “abrogation” is the claim to have lawful authority to be able to change the laws.
A much less well known and used word is “arrogation” which is used when someone annuals a law without lawful authority.
In American Law we could point to the Amendment undoing the earlier Amendment allowing prohibition as “abrogation”. Likewise we should point to various FDR era Court rulings which tossed the Constitution to the curb as “arrogating” the Constitution.