3-67 Muhammad ibn al-Hassan - may God be pleased with him - narrated that Muhammad ibn al-Hassan al-Saffar quoted Ahmad ibn Muhammad ibn Khalid, on the authority of his father, on the authority of Safvan ibn Yahya, on the authority of Abdullah ibn Sin’an,

“A believer’s name was mentioned to Aba Abdullah as-Sadiq (MGB). The Imam (MGB) said, ‘Indeed a believer is one who when angered, his anger would not lead him away from the right. A believer is one who when pleased, his pleasure would not lead him into the wrong. A believer is one who when in power, his power would not lead him to acquire what doesn’t rightfully belong to him.’”