In one of the recent matters “Jayadevi v. Narayana Pilla & Ors.” the High Court of Kerala stated that:

On the death of one among the testators, either in the case of joint Will or a mutual Will, the property left out by the deceased testator included in the Will alone would stand bound by the disposition made therein and it would not operate as against the property of the other testator, who is alive, till his/her death. The surviving testator will have every right to deal with the property till her/his death irrespective of whether the Will and the dispositions thereunder came into effect as against the property of the deceased testator.