Is it correct to call a Muslim who commits a sin an open sinner?

Question:
May Allah reward you, Your Eminence, father. The questioner asks: Is it correct to say that a Muslim who commits a sin is an open sinner?

Answer:
A major sin, the one who commits a major sin, such as unlawful sexual intercourse, theft, drinking intoxicants, or consuming riba (usury or interest). These are major sins; whoever commits them is an open sinner. This is practical open sinfulness, not doctrinal open sinfulness; it is practical open sinfulness.