Yahya related to me from Malik from Ibn Shihab that Said ibn al-Musayyab said, "If someone marries a woman and cannot have intercoursewith her, there is a deadline of a year set for him to haveintercourse with her. If he does not, they are separated."
USC-MSA web (English) reference: Book 29, Hadith 74
Arabic reference: Book 29, Hadith 1236