1- Annexation of Punjab and Multan; what Islamic cause? Infact annexation was done by crushing Ismailis(Muslims)
2- Even when it was annexed, the Muslim rule or Muslim society formed was not because of his efforts as it flourished some years 'after his death'. Regarding Hazrat Data Ganj Bakhsh:
Al-Hujwiri came to Lahore under orders from his Pir as successor to Shaikh Husain Zanjani at a time when as a result of irruption of the Seljuks on one side and the rising tide of Hindu resistance on the order, "the Ghaznavid Empire began to dismember rapidly, and life in Ghazni itself was disrupted." The saint had to leave Ghazni in difficult circumstances, leaving his books behind. [taken from internet]
3- Mehmood had nothing to do with these saints, esp. regarding the services they rendered for Islam here in the sub continent.
4- Somnath; what Islamic cause? 'It was a center of political power', 'they wanted to wage a united war against ghaznavi' and so on. Where in these arguments is the cause of Islam evident? Somnath per hamlaa aap ne maal o daulat ke liye kiya laikin ye koi galat baat nahin hai, galat hai us ko Islamic cause ka naam dena. Political motives thay, aap ke historians ne, esp. those around him, es ko war for Islam keh kar barri ziaadati ki hai
Daikhiye main es waqt es baat per zaur nahin de raha ke aaya us k iqdamaat galat thay ya sahi, main sirf ye waazeh kar dena chahta hoon ke aap us ke iqdamaat ke peechay muhirrekaat ko sahi tareeqay se samajh lijiye. Us ne Islam ke liye ye sub nahin kiya balke apni saltanat ko paaya e urooj tak pohanchaaney ke liye kiya laikin ye her giz koi mayoob baat nahin kyun ke by the end of the day its your national interests that take precedence over everything else.