Arabs had given up on Sidh for almost 28 years (680-708 CE) after failing in 6 full-scale invasions.
Al Hajjaj became governor of Iraq in 695 CE. He wanted to achieve the unachieved dream of conquering India via Sindh. twitter.com/i/web/status/1…
He attacked Kabul & Zabul but Hindu Kings kept defeating him.
Al Hajaj wrote a manipulative letter to Caliph to seek permission to attack Sindh. twitter.com/i/web/status/1…
Arabs under Budhail attacked the Capital of Sindh.
Raja Dahir's son Jaisiah crushed them and in this barbaric battle - Budail was killed & Arabs defeated.