Complex sentence: After getting disowned by his father, Behroze left his house to marry Ruhina, without the consent of Agha Jaan, while Arjumand was forced to marry Behroze's younger brother, Suhaib Bakhtiyar Khan (Ali Rehman Khan).
Split into simpler sentences: After getting disowned by his father, Behroze leaves his house to marry Ruhina, without the consent of Agha Jaan. Meanwhile Arjumand is forced to marry Behroze's younger brother, Suhaib Bakhtiyar Khan (Ali Rehman Khan).