What is the role of «غَفَرَ اللَّهُ لَهُ» in the Zayd example?

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

• A parenthetical prayer within the host statement
• A circumstance of the word
• The second object of «قال»
• The predicate of «زيد»