Does the iddah (waiting period) of a woman whose husband has passed away and who is carrying a dead fetus of three months end with the miscarriage of the fetus, or with the passage of four months and ten days?

The waiting period (iddah) for a pregnant woman ends with childbirth, whether the child is born alive or dead, fully formed or miscarried, and whether the reason is divorce, death, or an invalid marriage. This aligns with the noble verse: "And for those who are pregnant, their term is that they deliver their burden." If pregnancy is confirmed, the waiting period does not end until childbirth, even if the duration exceeds the maximum term of pregnancy.