What is the religious ruling on withdrawing one or two fetuses out of three in the wife's womb, based on the doctor's advice, to ensure the safety of the remaining fetus?

Some scholars permit abortion before the ensoulment if trusted doctors confirm the probability of the fetus's demise or deformity, relying on the principle of "committing the lesser of two harms." Others have forbidden it, and some deemed it reprehensible. The preponderant opinion is that abortion is permissible in this case due to necessity and benefit. However, if deformities are discovered after ensoulment, abortion is not permissible because the fetus becomes an inviolable soul. It must be noted that diagnoses of congenital defects might be conjectural; therefore, one should not rush into abortion, with a reminder of the virtue of patience in the face of calamities.