1-17 (The compiler of the book narrated) that his father - may God be pleased with him - narrated that Muhammad ibn Ali ibn al-Salt quoted on the authority of Ahmad ibn Aba Abdullah al-Barqy, on the authority of Yunus ibn Abdul-Rahman, on the authority of Abdullah ibn Sin’an, on the authority of Aba Abdullah as-Sadiq (MGB),

“The disciples told Jesus - the son of Mary, ‘O Teacher of the good! Teach us what the hardest thing is.’ He (MGB) said, ‘The hardest thing is the Wrath of God the Exalted the Sublime.’ They asked, ‘How can we avoid God’s Wrath?’ He (MGB) said, ‘By not getting angry.’ They asked, ‘What is the root of anger?’ He (MGB) replied, ‘Haughtiness, oppressiveness and belittling the people.’”