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Answer to a question about cursing the religion and the Lord

Question: From Abdulaziz bin Abdullah bin Baz to the zealous Muslim brother who seeks to safeguard his religion and his honor, may Allah preserve him, amin.
And peace be upon you and the mercy of Allah and His blessings; and after that:
I have read your question, which states that a wife attributed to her husband that he curses the religion and the Lord... etc.

Answer: Cursing the religion and cursing the Lord, glorified and exalted, are among the gravest forms of kufr, by the ijma of the people of knowledge. As for what pertains to establishing that this occurred from the man, and passing judgment upon him accordingly, and separating him from his wife, this is referred to the court.
And I ask Allah to grant everyone success in that which pleases Him.. was-salamu alaykum wa rahmatullahi wa barakatuh[1].
  1. Majmu' Fatawa wa Maqalat Mutanawwi'ah li-sh-Shaykh Ibn Baz (1/437).