Complex sentence: Amr or Umru ibn Uthman was the son of third Islamic Caliph Uthman ibn Affan.Emam Hussein's daughter Sakina was married to his son, Zaid ibn Umru ibn Uthman.
Split into simpler sentences: Amr or Umru ibn Uthman was the son of third Islamic Caliph Uthman ibn Affan. Imam Hussein's daughter Sakina was married to his son, Zaid ibn Umru ibn Uthman.