Ibn Taymiyyah's view on someone who abandoned praying

The Salafists expanded the range of heresy and Takfir. They think
most of Muslims are not true Muslims. One of the issues in
jurisprudence is the verdict on someone who do not practice
praying or Salat. If we verdict that those guys are non-Muslims the
width of Takfir will expand. In this essay, firstly, it is to explain the
Ibn Taymiyyah's view on this issue and then the view of
mainstream Sunni scholars about this case is expressed. Secondly,
the Ibn Taymiyyah's view on Takfir is explained. He ousted
Muslims from the realm of Islam for some trivial matters. In this
case, praying, Ibn Taymiyyah maintain that if someone confess to
Islam and accept that praying is one of its necessities but do not
practice it, we can not call him a Muslim. In this research, with
descriptive-analytic method this view is criticized. The following
are the results: Ibn Taymiyyah's view is against the mainstream
Sunni scholars. Just only Ahmad Ibn Hanbal in one case maintain
this idea. Albani, the great contemporary Sunni scholar, believe
that according to Hanbali school, this guy is not pagan.
Furthermore, we have so many religious texts indicating that if
someone deny the praying, he will remain in the hell forever. But if
someone do not deny the praying and theoretically accept it,
without practicing it, we cannot oust him from the Islam. Only Ibn
Taymiyyah verdict it.