Quotes and Status on Tawheed: It is separation between Paradise and Hell

 Tawheed is the foundation 

Shaykh ul-Islaam Ibn Taymīyāh Rahimahullaah said:

'Tawheed is the foundation of Eemaan, it is the statement of separation between the people of Paradise and the people of the Hellfire. It is the price of Paradise and no one's Islaam is correct without Tawheed.' 

[Majmoo al-Fatawa 24/235]

Translated by Abbas Abu Yahya