The greatest [asset] is taqwā or piety which the Qur’an and hadīth have so much underscored, urging man to be upright and cautioning him to watch lest he should oppress people with his tongue, eye or ear. Administer justice. Do not seek justice for others, but for yourselves as well. Observe justice in your behavior and words.
Sahifeh-ye Imam, vol. 19, p. 344