“The second husband may seek recourse from her for what the first husband took from him.” That is, the second husband may recover from the wife what the first husband took from him. Thus, the second husband ultimately bears no financial liability, because he may recover from the wife the amount he paid to the first husband. The reason is that the dowry given to her by the first husband came into her possession; and since she received it, she must return it.
The sound view, however, is that he may not recover anything from her unless she deceived him. How could she have deceived him? By failing to inform him that she was the wife of a missing man. In that case, if the first husband takes his dowry from the second husband, the latter may recover it from her. But if there was no deception, he may not recover anything from her, because it was he who caused her to be lost to her first husband. Although a marriage necessarily requires her consent, the reality is that he was the one who committed a form of infringement upon the first husband’s right.
In summary: the wife of a missing man waits for the prescribed period of waiting for him; she then observes the waiting period for a widow. Thereafter, if she wishes, she may marry. If her husband remains missing, the marriage remains as it is. But if he returns, then the matter requires further detail according to the madhhab: if he returns before the second husband has consummated the marriage, she belongs to the first husband; but if he returns after consummation, the first husband is given the choice between taking her back and leaving her. If he takes her back, he does not need to renew the marriage contract, but he may not have intercourse with her until the second husband’s waiting period has ended. If he leaves her with the second husband, the latter does not need to renew the marriage contract; rather, she remains with him under the original contract. The first husband may take from the second husband an amount equal to the dowry he gave her, and the second husband may recover from her what was taken from him.
The correct view in this issue is that the first husband has an unrestricted choice, whether the second husband consummated the marriage or not. If he leaves her with the second husband, she remains his wife, and the first husband takes from him his dowry; the second husband may not recover anything from her. But if the first husband takes her back, she is his wife.