Darema was a sharp-tongued Arab lady who was very loud in the praise of Ali and the denunciation of Muawiyah. After the death of Ali, Muawiyah summoned her to his court and inquired of her why she had supported Ali. She said that she had done so because Ali was a lover of justice, who honored the pious and sympathized with the poor.
"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