Sahih Muslim
The Book of Faith (Kitab Al-Iman)
Book Number: 001 / Hadith Number: 168
It is narrated on the authority of Jabir that a man came to the Apostle of Allah (may peace be upon him) and said: Messenger of Allah, what are the two things quite unavoidable? He replied: He who dies without associating anyone with Allah would (necessarily) enter Paradise and he who dies associating anything with Allah would enter the (Fire of) Hell.