The ruling on one who says a word of Allah's displeasure without intending it

Question:
He says: Honorable Shaykh, may Allah grant you success, is a person excused if he says a word that incurs Allah's displeasure and he does not intend it?

Answer:
This is known: if he said it out of ignorance, it is clarified to him, it is clarified to him, and he is excused due to ignorance. But if he said it while knowing, then repentance is necessary; he is not excused due to ignorance because he knows. This applies to obscure matters. As for apparent matters, such as the issue of shirk (associating partners with Allah) and tawhid (the oneness of Allah), and the obligation of prayer, zakah (the obligatory alms), fasting, and Hajj (the major pilgrimage), and the prohibition of riba (usury or interest), these are apparent matters. These are matters known from the religion by necessity. But in obscure matters, a person is excused due to ignorance if someone of his level is ignorant of them.