«سُرُوجُ دَارِي الَّتِي وُلِدْتُ بِهَا»
Surūj is my home, the place where I was born.
Dārī is an iḍāfah with a first-person possessive suffix. Allatī is a feminine relative pronoun referring to dār, and wulidtu bihā is its relative clause. Wulidtu is a passive perfect verb; bihā refers to the same home.
The relative clause identifies the place as the speaker’s birthplace and thus strengthens the claimed link to Surūj. It is not a new independent subject but a modifier linked to the preceding noun.