Ultra-realistic full-body depiction of a hostile Arabic guard from the late 7th century, realistic human proportions, grim and intimidating presence, hardened by violence. Pose: standing guard with empty hands, arms relaxed but tense at the sides, fingers slightly curled; NOT holding any weapon. Weapon placement: a curved scimitar fully sheathed in a leather scabbard at the belt, no weapon in hands, no raised arms, no combat pose. Expression: aggressive, suspicious glare, narrowed eyes, clenched jaw, scarred and weather-beaten face; no noble or heroic expression. Clothing and armor: worn and mismatched Middle Eastern lamellar or scale armor over dirty layered cloth, faded tunic, frayed cloak, loose sirwal trousers, rough leather belts and straps; practical and utilitarian, no ceremonia