The doings of Lot's people saddened his heart. Their unwholesome reputation spread throughout the land, while he struggled against them. As the years passed, he persisted in his mission but to no avail. No one responded to his call and believed except for the members of his family, and even in his household, not all the members believed. Lot's wife, like Noah's wife, a disbeliever.
Allah the Almighty declared: Allah sets forth an example for those who disbelieve, the wife of Noah and the wife of Lot. They were under two of Our righteous slaves, but they both betrayed their (husbands by rejecting their doctrine) so they (Noah and Lot) benefited them (their respective wives) not, against Allah, and it was said: "Enter the Fire along with those who enter!" Surah 66: 10
"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