Imam al-Shafi'i (may Allah have mercy on him) said in his old (view): "Sayyiduna Umar, Sayyiduna Ali and Sayyiduna Ibn Abbas (may Allah be pleased with them) ruled concerning the deceived (husband) that he shall reclaim the dower (amount) from the person who deceived him."
Sa'id bin al-Musayyab (may Allah have mercy on him) said that Sayyiduna Umar bin al-Khattab (may Allah be pleased with him) said: Any man who marries a woman who is afflicted with insanity, leprosy or vitiligo, and he has had intercourse with her, then the dower is due from him, and it will be charged to the woman's guardian.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النكاح / 14252