ANSWER:

This is not permissible as a believer is not a person who curses or uses obscene words or profanity and a person who curses would be deprived from interceding on the day of judgment as the prophet salla Allahu alaihi wa sallam has said.

QUESTION: I’m accustomed to using “oh heck” and “damn” when talking with my friends or texting them. Is this imitating the kufr? And am i sinful?