When a woman’s husband disappears or goes missing and it is not known whether he is alive or dead, then such a woman cannot enter into a second marriage. Instead, she should remain waiting in the hope that her husband will return. When she remains waiting until such a time that her husband must have reached 90 years of age, we will give the ruling that he must have passed away by now. Based on this, if a woman is still young and she wishes to remarry, she must wait until her husband’s age must have reached 90, thereafter she must complete her ‘iddah, and then she can enter into a second marriage. However, the condition for this is that the ruling that her first husband must have passed away by now will have to be passed by a Shar’î judge.