The Prophet (s) said: "On the Day of Resurrection, a man who treats his parents piously after their departure of life will be regarded as the chief of the pious."443
Imam al-Baqir (a) said: "A servant who is pious to his parents during their lifetimes may be, later on, decided as impious. This may occur when such a servant neglects settling the debts of their dead parents and neglects seeking Allah's forgiveness for them. Likewise, a servant who is impious to his parents during their lifetimes may be decided as pious. This occurs when such a servant settles the debts of their parents, after their death, and seeks Allah's forgiveness for them." 444
Imam as-Sadiq said: "Nothing of the rewarding follows the dead except three: a continuous alms that was dedicated during lifetime, an instruction of right guidance that is followed by others, and a righteous son who supplicates to Allah for him." 445
Ingratitude and bad turn are ill manners denied by reason and law and disapproved by sound conscience. Through this criterion, we can feel the hideousness and horribleness of filial impiety, which is a crime taking to Hell. In addition to its being in violation of human principles, reason, and law, filial impiety is an indication to emotionlessness, faithlessness, and fading of human values. Parents exert giant efforts for educating and securing every means that achieves material and mental prosperity for sons who, whatever they do, cannot appreciate their endeavors. How is it then possible for sons to neglect such emotions and repay with mistreatment and impiety?
The Prophet (s) said: "The punishment for three sins are immediate and not postponed to the Hereafter: filial impiety, oppression against people, and ingratitude." 446
Imam al-Baqir (a) said: "My father, once, saw a man