جَاءَ أَخُوكَ خَالِدٌ.
“Your brother, namely Khālid, came.”
جَاءَ: past verb.
أَخُوكَ: nominative subject with wāw; the suffix kāf is a genitive-position possessor.
خَالِدٌ: nominative explanatory apposition with ḍammah.
This is an additional teaching example, not a quotation from the book.