Abu Malik al-Ashja'i Sa'd bin Tariq narrates from his father that he heard the Prophet (peace and blessings be upon him) say: "Whoever affirms the Oneness of Allah, and disbelieves in whatever is worshipped besides Allah, Allah has made his wealth and his blood inviolable, and his reckoning is with Allah."
Hadith Referenceالمعجم الكبير للطبراني / باب الطاء / 8163