may i ask who is Raja Dahir?
Daekho Yeh Hai Sindh Yahaan Zalim Dahir Ka Tola Tha,
Yaheen Mohammed Bin Qasim Allah-o-Akber Bola Tha,
Tooti Hoi Talwaroun Mein Kya Bijli Thee Kya Shola Tha,
Gintee Kay Kuch Ghazi They Lakhon Ka Lashker Tola Tha,
Yahaan Kay Zarray Zarray Mein Ab Doulat Hay Emaan Ki,
Iss Ki Khatir Ham Ne Di Qurbani Lakhon Jaan Ki
Pakistan Zindabad! Pakistan Zindabad!
The cool thing about Mohammad Bin Qasim was not that he set out conquests of India, but he showed that India was conquerable, after repeated defeats the Arabs (and by extension Muslims) were slowly losing heart to expand their mission to India.
Mohammad Bin Qasim was a military guy. A small piece in the advent of Islam within South Asia... Hero? I never saw him or other self-proclaimed "Khalifas" as our heroes. They were interesting, even awe inspiring, but doodh ke dhulay huay? Not.