In the case of a crisis, Ali laid down the following strategy to be adopted: "If in a battle there is a critical time, and you have to fall back, do not forget to make such retreat a step for attacking the enemy again with redoubled force. Do not lose heart. Be stout hearted. Be prepared. Keep swords ready. Suppress voices. Maintain silence for that is the way to overcome a crisis."
"When a person dies, his works end, except for three: ongoing charity, knowledge that is benefited from, and a righteous child who prays for him."
Prophet Mohammed (PBUH)
"The best of what a man leaves behind are three: a righteous child who supplicates for him, ongoing charity the reward of which reaches him, and knowledge that is acted upon after him."
Sunan Ibn Mājah
"Every day two angels come down from Heaven and one of them says, 'O Allah! Compensate every person who spends in Your Cause,' and the other (angel) says, 'O Allah! Destroy every miser.'"
Sahih Bukhari