Muhammad b. al-Hasan b. Ahmad b. al-Walid narrated to us. He said: Muhammad b. al-Hasan al-Saffar narrated to us from al-`Abbas b. Ma`ruf from Bakr b. Muhammad al-Azdi from Abi Basir. He said: Abu `Abdillah al-Sadiq said:

The foundations of disbelief are three: greed, arrogance, and envy. As for greed, when Adam was prohibited from the tree, greed caused him to eat from it. As for arrogance, when Iblis refused to prostrate to Adam, he was arrogant. As for envy, one of Adam's sons killed the other due to envy.