Complex sentence: Finally, the Kharijite leader Harun ibn Abdallah himself was defeated and captured by Hamdan's son Husayn in 896, before being sent to Baghdad, where he was crucified.
Split into simpler sentences: Finally, the Kharijite leader Harun ibn Abdallah himself was defeated and captured by Hamdan's son Husayn in 896. Harun was sent to Baghdad, where he was crucified.