Hazrat Sha'bi (may Allah have mercy on him) said that if the discord is from the husband's side, then it is not permissible for him to take anything from the woman. If it is from the woman's side, then he can take.
Hadith Referenceسنن سعید بن منصور / كتاب الطلاق / 2613
Hadith Takhrij«أخرجه سعيد بن منصور فى «سننه» ترقيم الدرالسلفية برقم:، 1436، 1437»