Christian wife embraced islam after marriage and then apostated – Permanent Committee

Q: A Muslim married a woman from the People of the Book, then she embraced Islam, but then reverted to her previous religion.

A:

She is unlawful to him, as she is now a Murtad (apostate).

Reference: Fatwas of Permanent Committee – Group 1 – Fatwa :754 Part :20 Page :14 – 15

Source: alifta.com