What is the expiation for a man who unintentionally caused a pregnant woman to miscarry due to his anger, even though he was unaware of her presence?

If a person frightens a pregnant woman, causing her to miscarry, he is liable for the diyah (blood money) for the fetus. Scholars have differed on whether the diyah is due if the miscarriage occurred before the fetus was fully formed. The preponderant opinion is that if the miscarriage occurred before the nutfa stage (before 40 days), then diyah is not obligatory. Therefore, if the woman was in her first month, diyah is not incumbent upon you. You should seek forgiveness from your neighbors for disturbing them, emphasizing the great right of the neighbor.