When starting operations in a battle, Ali would pray to God in the following terms: "O God, our hearts are inclined to You. Our heads bow before You. We look to You for help. We are fighting in Your Way, against the people who are fighting for selfish ends. We seek Your aid. All victory belongs to You."
"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