Ibn Ishaaq also reported that when King Hezekiah of Israel died, the Israelites' condition deteriorated; there was political confusion, and their wickedness increased. Isaiah preached to them what Allah revealed to him, directing them to righteousness and warning them of Allah's severe punishment. His preaching made him their enemy and they decided to kill him, so he escaped from them.
Related Quran Ayaaths of this Hadith.
"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