Amir al-mu'minin, peace be upon him, said: Incapability is a catastrophe; endurance is bravery; abstinence is riches; self-restraint is a shield (against sin); and the best companion is submission (to Allah's will).
وَ قَالَ ( عليه السلام): الْعَجْزُ آفَةٌ وَ الصَّبْرُ شَجَاعَةٌ وَ الزُّهْدُ ثَرْوَةٌ وَ الْوَرَعُ جُنَّةٌ وَ نِعْمَ الْقَرِينُ الرِّضَى