Praise be to Allaah.
Firstly:
If the pregnant woman aborts the foetus by taking medicine
and the like, after four months of pregnancy, then the diyah must be paid
according to scholarly consensus, and expiation must be offered according to
some of them.
The diyah in this case is a male or female slave; if that is
not possible then the equivalent value in camels must be given, namely five,
because the diyah of the foetus is one tenth of the diyah of his mother, and
it is well known that the diyah of a free Muslim woman is fifty camels, so
the diyah of the foetus is five camels.
This diyah must be paid by everyone who was directly involved
in aborting the foetus; that includes the doctor and the woman if she took
medicine to help with the abortion; the diyah must be paid to the heirs of
the foetus, except that the killer does not take any of it.
The evidence for that is the report narrated by al-Bukhaari
(6910) and Muslim (1681) from Abu Hurayrah (may Allaah be pleased with him),
who said: Two women from Hudhayl fought and one of them threw a rock at the
other and killed her and the child in her womb. They referred the matter to
the Messenger of Allaah (peace and blessings of Allaah be upon him) and
he ruled that the diyah for her foetus was a slave, male or female, and he
ruled that the diyah for the woman be paid by her (the killer’s) ‘aaqilah
[the relatives who must pay the ‘aql or diyah (blood money), i.e., the male
relatives on the father’s side].
With regard to the kafaarah or expiation, the Shaafa’is and
Hanbalis are of the view that it must be offered.
The expiation for killing is to free a slave, and if that is
not possible, to fast for two consecutive months.
If the abortion took place before four months of pregnancy,
then it is haraam, as has previously been explained in the answer to
question no. 42321, but no expiation or diyah is required, because the soul
had not been breathed into it.
Secondly:
If this incident involved one who issued instructions and one
who actually did the deed, such as a man who ordered the doctor to carry out
the abortion, or who ordered the woman to take medicine, then the liability
(diyah and expiation) is borne by the one who actually did it, not the one
who ordered him. See Mataalib Ooli al-Nuha (6/50).
Thus it is clear that your father does not have to do
anything but repent, because suggesting and ordering someone to have an
abortion is obviously an evil deed, so he has to repent to Allaah, regret
what he did and do a lot of righteous deeds such as giving charity and so
on, in the hope that Allaah will accept his repentance. Allaah says
(interpretation of the meaning):
“And verily, I am indeed forgiving to him who repents,
believes (in My Oneness, and associates none in worship with Me) and does
righteous good deeds, and then remains constant in doing them (till his
death)”
[Ta-Ha 20:82]
And Allaah knows best.