Explanation

Raja Dahir's kingdom was invaded by the Arab Umayyad Caliphate, led by Muhammad bin Qasim, in 711 CE.

The invasion was partly motivated by the pirate raid off the coast of Debal.

It resulted in gifts to the Umayyad caliph from the king of Serendib (modern-day Sri Lanka) being stolen.

Raja Dahir was born in 663 CE and ruled Sindh from 695 to 712 CE.

He was defeated and killed by Muhammad bin Qasim in the Battle of Aror in 712 CE.