1175. (A/SM): The one who kills directly or indirectly (e.g., causing death by digging a well, leaving a machine running, or giving medicine), whether intentionally or mistakenly, will not inherit, whether or not the killer is mukallaf (a legally liable adult). The only killer who will inherit is the one who kills justifiably.
(A2/SM): If one does a permissible act that results in the death of his relative, such as a father giving medicine to his son, he will not be barred from inheritance. What matters is whether the killer will be liable for any retribution, indemnity, or expiation; if not, he or she is not barred from inheritance.
(-H): Indirect killing (causing death by an action that would not usually result in it) does not bar one from inheritance. Also, the non-mukallaf killer is not barred. (-M): Only intentional killing bars the killer from inheritance. (-S): Anyone who took part in the killing in any way is barred, even if it was justifiable.
(A) + (+H, +M): The one who kills justifiably is not barred from inheritance.
Notice that on one side, the Mâlikis tried to hold to account only those who committed wrongdoing, while the Shâfi‘is tried to strictly block all the means to the evil of bloodshed. The Ḥanafis and Ḥanbalis fell in the middle, trying to strike “the right balance.”