The ruling on one who drank a beverage and caused the miscarriage of her fetus

Question: My wife was five months pregnant, and she experienced back pain. One of her relatives advised her to drink vinegar to relieve the pain. After she drank the vinegar, the fetus was expelled immediately. Is there a sin on my wife? If so, what is the ruling? Or is the sin on the one who gave her this advice?

Answer: The specialized doctors should be consulted about this matter. If they determine that drinking vinegar causes the fetus to be expelled, then the ruling is that of accidental killing. She owes the blood money and the expiation.
She was in the wrong when she took the advice without the knowledge of a trustworthy doctor.
As for if it does not harm the fetus, according to the specialized doctors, then she owes nothing; because it is a decree from Allah without a cause from her.