about your "preventive warning"... 

Shouldn't you follow your own advice, first? In the al-Khwarizmi page as well as al-Biruni page you've been exccessively edit-happy. You kept deleting legit sources I gave in the al-Biruni page, and in al-Khwarizmi. I have two sources that state that al-Khwarizmi is an Arab, you deleted it and kept Muslim, since you don't have sources to prove he's Persian. In the al-Biruni page, when I gave two more sources and cited one in the article, it got prominently deleted, why? Is it because you have a problem with proof that he could've been Arab? Does that disturb the propaganda you're trying to spread? Please take these nice policies and follow them before you start giving me preventive warnings: WP:V, WP:NPOV, and WP:NOR.