It is reported that a young man approached the Holy Prophet (s.a.w.s.) and asked,
"O Prophet of Allah (s.a.w.s.), I have a mother who is an invalid. She cannot even move by herself. I carry her on my back and feed her with my hands. I also clean her excreta. Have I fulfilled her rights?"
The Holy Prophet (s.a.w.s.) replied,
"No. Because you have remained in the womb for a long period during which you derived your nourishment from her body. She was every busy in caring and protecting you at all costs. Inspite of such hardships she always wished a long life for you. But you are waiting for her to die so that you may relieved of the responsibility of taking care of her."
The Holy Prophet (s.a.w.s.) described the eminence of a mother's position in the following statement:
1) "If you are praying a mustahab prayer and your father calls you, do not break your prayer but if your mother calls, break the prayer."
Truly, this assigns a remarkably high status to a mother. The Prophet (s.a.w.s.) states,
"Paradise is at the feet of your mother."
Hence one need not go far in search of Paradise.
Be Good to Parents Even if They Are Kafirs
Whether the parents are believers and pious or Kafirs and sinful, goodness towards them is wajib. And 'Aaq-e-Waledain' is Haraam.
The verse of Surah Luqman says thus,
"And if they contend with you that you should associate with Me what you have no knowledge of, do not obey them, and keep company with them in this world kindly...".
(Surah Luqman 31:15)
Dua For Sunni Parents
Moammar Ibne Khallad asked Imam Reza (a.s.) whether one is allowed to pray for one's parents if they had not followed the truth and had not been Shia.
Imam Reza (a.s.) replied,
"If they are dead, pray for them and give Sadaqah on their behalf. If they are alive keep them happy."
The Holy Prophet (s.a.w.s.) says;
"Allah the Most High has sent me as the Mercy for the worlds, except to the 'Aaq' (of parents)."
Jabir Ibne Abdullah (r.a.) reports that someone asked Imam Ja'far as-Sadiq (a.s.), "My parents are against the truth, i.e. they are not the Shia of Ahlul Bayt (a.s.)". Imam replied:
"Be good towards them like you would be towards out Shias."
(Al Kafi)
Momin and Kafir Are Equal Under Three Circumstances
Hazrat Imam Muhammad al-Baqir (a.s.) said;
"Allah has not given superiority to a Momin in three circumstances.
First, to return what has been entrusted to you for safe keeping whether it belongs to a Momin or a Kafir.
Second, fulfilling an oath, whether given to a Momin or a Kafir. Third, doing good to the parents, whether they be Momin or Kafir."
(Al Kafi)
A letter on various aspects of Islamic Shariat, written by Hazrat Imam Reza (a.s.) to Mamun, include the following:
"Benevolence to parents is wajib even if both of them are 'Mushrik'. However obedience to parents is not wajib if their order is against the orders of the Creator."
(Oyun-e-Akhbare Reza)
Advice of Imam as-Sadiq (a.s.) to Zakaria Ibne Ibrahim
Zakaria, the son of Ibrahim, was a Christian. Later he converted to Islam and had the honour of meeting Imam Ja'far as-Sadiq (a.s.). He told Imam (a.s.) "My mother is a Christian and she is old and blind." The Imam advised him,
"Serve your mother and behave kindly towards her. Upon her death, do not leave her dead body to others. Perform her funeral rites yourself."
Thus this statement of the Imam (a.s.) is pregnant with two prophecies. Her death, and her conversion to Islam.
When Zakaria returned to Kufa he began to behave very kindly with his mother. He fed her with his own hands. Changed her clothes, washed and bathed her too. In short, he served his mother in every possible way. His mother asked, "My son you were not so dutiful when you were a Christian. Why is it that now you serve me day and night?"
Zakaria replied, "O my mother. I have a master who is the son of the Prophet of Allah (s.a.w.s.). He advised me to serve you in this way." The mother asked, "Is he a prophet?" "No. But he is a son of the Prophet (s.a.w.s.)." "Such a person must be a Prophet because only prophets teach such manners." The mother remarked.
Zakaria explained to his mother, "The chain of the Prophets came to an end with the Prophet of Islam (s.a.w.s.). He was the seal of the Prophets. The one who has guided me is the son of the Prophet (s.a.w.s.)." The mother said, "My son, the religion of Islam that you have embraced is better than all the religions. Teach me, so that I too may become a Muslim."
So, Zakaria made her recite the 'Kalima' and taught her the true beliefs. Later, this lady performed the Zohrain and the Maghrebain prayers. The same night death approached her. She told her son: "Dear son, repeat to me again whatever you have taught me." Zakaria began to recite while she listened carefully and in this way she passed away.
Displeasing the parents is Haraam and goodness towards them is Wajib, whether they are alive or dead. In other words parents have rights upon their children even after they (the parents) are dead.
If the son or the daughter forgets the parents after their death and does not perform good deeds on their behalf, it is 'Aaq-e-Waledain' irrespective of the fact that the child had fulfilled all his or her rights and served them till the time of their death.
source : GREATER SINS by Ayatullah-ul-Uzma Sayed Abdul Husain Dastghaib Shirazi (r.a.)