The Purpose of the term 'Wahhabi'
Shaykh Muhammad Khalil Harras
Translation by: Aboo Waheeda as-Salafee
Is there a religious sect called 'wahhabi' ?
There is no such sect with this name.
Rather this is just a nick name that the people of falsehood have branded it on the people who uphold the truth , the people of tawheed (Oneness of Allaah in everything).
And this name they refer it to Shaykh Muhammad ibn AbdulWahhab (may Allaah have mercy on him.)
And he is a great Imaam from the Imaams of who brought religious rectification in the lands of Najd. 
Thus he called to going back and establishing Tawheed (after people were into shirk).
And reviving the methodology of the Salaf (pious predecessors) .
And in this effort of his; the clan of Saud helped him; until they managed to relinquish and remove almost all the shirk and bid'a (innovations) , like calling on the dead people in the graves, and extremism in praising other humans.
Thus all of the lands of Najd returned to Tawheed (Oneness of Allaah in everything) and Ikhlaas (sincerity in worshipping of Allaah)
May Allaah have mercy on them and reward them greatly.
 Najd is part of The Kingdom of Saudi Arabia
Source : http://fatawa.al-islam.com/Fatawa/Display.asp?FatwaID=1742&ParentID=500&Page=1
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