Does the marriage become illegitimate if the husband is unable to fulfill his promise to buy a house for his wife after seven years and two children?

If the conditions for marriage are met, it is valid, and the failure to fulfill the promise of buying a house does not affect its validity. Fulfilling a promise is recommended, not obligatory, according to the majority of jurists. The wife has the right to a separate dwelling, but she does not have the right to refuse intimacy due to your failure to fulfill the promise. The incapable is not burdened with what he cannot bear.