Which form of amplification is most apparent in «حَضَرَ الضُّيُوفُ، حَضَرَ الضُّيُوفُ»?

Supplementary Practice 1: Applied Analysis of Faṣl, Waṣl, Ījāz and Iṭnāb

• Ellipsis of a genitive head
• Parenthetical prayer
• Specific mention after the general
• Repetition for emphasis or alertness