Is fornication a sin that involves injustice to oneself only, or does it also involve injustice to others?

Adultery is one of the grave sins and immoralities that Allah Almighty has forbidden and prohibited even approaching, as He says: "And do not approach unlawful sexual intercourse. Indeed, it is ever an immorality and is evil as a way." It involves injustice to oneself by exposing it to Allah's wrath and punishment, and injustice to others by violating their sanctity and honor. Its ugliness increases if it is committed with or by a married person, due to the defilement it causes to the marital bed and the mixing of lineages.