What is the ruling on paying money to the victim in exchange for his forgiveness of the perpetrator?

The student : It remains for a period of time until the judge rules on what he has regarding the case. So, does one of them, for example, have the right to ransom himself? I was imagining that it might be permissible in the Shari'ah for a person to ransom himself. For example, if he expects to be imprisoned for a year or more, he might say: "I will pay the victim, for example, one thousand dinars, or more or less, in exchange for his forgiving me and pardoning this matter."
Another student: But note, Professor, he has to sit for a year or two, so it is intentional and deliberate.
The student : It is deliberate, my Shaykh.
Another student: As for the mistake!
The student : It is not a mistake.
Another student: In reality, the killing would be...
The student : That is correct. I am not saying it is a mistake. As for this, it is intentional, and I am giving a very brief example.
Another student: This deserves, I mean, a reduction [in the punishment].