What are the rulings on blood money (diyyah) and expiation (kaffarah) resulting from the abortion of a fetus in its eighth week after a young man and a married woman agreed to the abortion and subsequently repented, and upon whom is the blood money obligatory, how is it calculated and distributed, can it be cooperatively paid, and what is the ruling on those who carried out the abortion?

Adultery is one of the gravest sins and necessitates sincere repentance, an increase in good deeds, and avoidance of the causes of sin. Aborting a fetus conceived through adultery is Islamically forbidden, and its ruling varies depending on the stage of the fetus's development:

1. After the ensoulment (120 days): The ghurrah (a female slave, or its value, which is one-twentieth of the blood money for a man) and expiation are obligatory.

2. After formation but before ensoulment: Only the ghurrah is obligatory, and formation usually does not occur before 80 days.

3. Before formation (e.g., eighth week): Neither the ghurrah nor expiation is obligatory, but abortion is forbidden, and repentance and seeking forgiveness are obligatory.

Suicide is also among the gravest sins, and repentance is better than despair, for Allah accepts the repentance of His servants. Those who commit adultery are obligated to sincere repentance, remorse, cutting off all communication, and frequently seeking forgiveness.