Is it permissible to abort a fetus in its early weeks if it is proven to be afflicted with a chronic, genetically transmitted disease, knowing that doctors have confirmed a 50% probability of the second child being affected by it?

Abortion is impermissible except out of a necessity that is certain or highly probable to endanger the mother's life. The anticipated deformity of the fetus does not permit abortion. As for the temporary use of contraceptives, such as 'azl (coitus interruptus) and non-harmful medications, the majority of jurists do not consider it forbidden. Rather, some deem it reprehensible, while others deem it permissible, provided the free wife's consent is obtained for 'azl. However, the use of methods that permanently sever procreation is forbidden by the majority of scholars, unless there is a certain or highly probable harm that would afflict the mother or the child, and weak probabilities are not taken into account.