Complex sentence: He was son of Ghazi Salar Sahu who was married to Sitr-i-Mu'alla, a sister Sultan Mahmud Ghaznavi many historian disagree with the claim of his relations with Sultan Ghaznavi as sultan was known as arthodix Sunni whereas Salar Ghazi was a Shia scholar.
Split into simpler sentences: He was son of Ghazi Salar Sahu who was married to Sitr-i-Mu'alla, a sister Sultan Mahmud Ghaznavi. However many historian disagree with the claim of his relations with Sultan Ghaznavi as sultan was known as arthodix Sunni whereas Salar Ghazi was a Shia scholar.