What is the ruling on a man marrying a second wife with pre-existing conditions that nullify many of his marital rights, while his first wife is aware of his disinterest in her, and his justification is that polygyny is permissible, even if there is no legitimate Sharia reason or shortcoming on the part of the first wife?

Islamic law permits polygyny, allowing a man to have up to four wives, provided he can maintain justice among them. His marriage to this woman is permissible for him, regardless of whether he loves her; if he does love her, it is even more reason for him to marry her. If he marries her while fulfilling the conditions, the marriage is valid. The condition of not having sexual intercourse does not affect its validity, and the husband has the right to demand it. If she stipulated before the contract that he would not marry another woman or not take back his divorced wife, and he agreed, then he must fulfill that. If his parents object to this marriage for a legitimate Shar'i reason, then obedience to them is obligatory; otherwise, it is not. If he fears that the marriage will lead to the dispersion of his family, then it is better for him not to proceed with it.