What is the ruling on one who has become accustomed to swearing by other than Allah, and when reminded, says, "I forgot"?

The questioner : Shaykh, may Allah reward you: It has become common on the tongues of some of the common people, or some people, that they say some of the phrases of shirk (associating partners with Allah) and then try to get out of it by claiming ignorance, meaning: they know the ruling, but they mean they keep repeating them. So when you tell him: this is such and such, he says to you: "By Allah, I forgot, my brother."

The Shaykh : What?

The questioner : He says: that he forgot, he forgot this act, meaning, for example: he says a word of shirk, for example, when swearing he says: "By the Prophet," or "By the life of the Prophet," these words. So when you clarify it to him, he says to you: "By Allah, I forgot, my brother, but I do not approve of this?"

The Shaykh : You know that Allah the Exalted said in His Book: , so if a person has become accustomed to swearing by other than Allah, as is found in many Muslim societies, unfortunately, they swear by the Prophet (peace and blessings be upon him), if he has become accustomed to this from childhood, and the people around him all swear by the Prophet, then it is not easy for him to leave it in one day or two days, or one month or two months. So if he says: that he forgot, then Allah has excused him if he is forgetful, and it is not unlikely that he is forgetful, because he has become accustomed to it. So we say: strive to remember that this is forbidden, and not to do it.