Allah Taala says in Quran
.1.And We have enjoined on man to his parents. His mother bore him in weakness and hardship upon weakness and hardship, and his weaning is in two years - give thanks to Me and to your parents. Unto Me is the ftnal destination. (31:14)
2.And Your Lord has decreed that you worship none but Him. And that you be dutiful to your parents. If one of them or both of them attain old age in your life, say not to them a word ofdisrespect, not shout at them but address them in terms of honor. And lower unto them the wing of submission and humility through mercy, and say: My Lord! Bestow on them Your Mercy as they did bring me up when I was young. (17:23-24).
AHADITH
3. A person asked Rasul Sallallahu Alaihi Wasallam:
Who has the most right to my good company? He answered: Your mother. The man asked: And then who? He said: Your mother.' The man again asked: And then who?
He again answered: Your mother. Then the man asked yet again: And then who? Rasul Sallallahu Alaihi Wasallam: then said: Your father.
(Bukhari, Muslim).
4. Shall I inform you of the greatest of the great sins? They said: Certainly, 0 Allah's Messenger. He said: (They are) ascribing partners to Allah, disobeying parents, at the time he was reclining and then he sat up and said: And false testimony and false witness. Verily, false testimony and false witness. He continued to repeat that until Abu Bakrah (the narrator) had said (to himself): If only he were to be silent. (Bukhari, Muslim).
5.Abdullah bin Mas'ud Raziallahu Anhu asked Rasul Sallallahu Alaihi Wasallam: to tell him what deed is most beloved to Allah. Rasul Sallallahu Alaihi Wasallam:answered: Being dutiful to parents. When asked what next, he said: Jihad in the way of Allah. (Bukhari, Muslim)
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6.A man came to Rasul Sallallahu Alaihi Wasallam: to seek permission to take part in jihad. Rasul Sallallahu Alaihi Wasallam: asked him: Are your parents alive? He said: Yes. So Rasul Sallallahu Alaihi Wasallam:told him: GO and strive on their behalf. (Bukhari, Muslim)
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7. A man from the Ansar came to Rasul Sallallahu Alaihi Wasallam:and asked him: 0 Rasulullah Sallallahu Alaihi Wasallam:
:Is there any responsibility that I have to fulfill toward my parents after they have passed away? Rasul replied: Yes, there are 4 matters:
• Pray upon them, ask forgiveness for them.
• Fulfill their promises.
• Honor their close friends.
• Keep ties with those concerning whom you have no relations except through (yourparent).
This is what is left upon you of good behavior toward them after they die. (Ahmad).
8. From the most dutiful acts is that a man keeps contact with the beloved friends of his father after the father had passed away. (Muslim).