Allah's Messenger (ﷺ) said a sentence and I said another. He said, "Whoever dies while he is setting up rivals
along with Allah (i.e. worshipping others along with Allah) shall be admitted into the (Hell) Fire."
And I said the other: "Whoever dies while he is not setting up rivals along with Allah (i.e.
worshipping none except Allah) shall be admitted into Paradise."
Sahih al-Bukhari Book 83, Hadith 60