Is there a jurisprudential principle which states that the transgressor’s intent should be thwarted by preventing him from acquiring what he covets of others’ rights through slander and injustice?

The answer is summarized in the rule of "opposition by counter-intention," which means that whoever intends something, which then leads to a certain outcome, is punished by being deprived of their intention. Examples include:

1. Depriving the intentional killer of inheritance, and depriving the executor of the bequest by killing the testator. Here, they were punished by the opposite of their intention. 2. The inheritance of a woman divorced irrevocably (three times) during a death illness, where the husband intended to deprive her of inheritance, so he was treated with the opposite of his intention and she inherited from him. 3. Praying against someone who announces a lost item in the mosque, asking that they not find it, treating them with the opposite of their intention.