Istighfar for both the parents

مَا كَانَ لِلنَّبِىِّ وَٱلَّذِينَ ءَامَنُوٓا۟ أَن يَسْتَغْفِرُوا۟ لِلْمُشْرِكِينَ وَلَوْ كَانُوٓا۟ أُو۟لِى قُرْبَىٰ مِنۢ بَعْدِ مَا تَبَيَّنَ لَهُمْ أَنَّهُمْ أَصْحَٰبُ ٱلْجَحِيمِ

It is not fitting, for the Prophet and those who believe, that they should pray for forgiveness for Pagans, even though they be of kin, after it is clear to them that they are companions of the Fire.

وَمَا كَانَ ٱسْتِغْفَارُ إِبْرَٰهِيمَ لِأَبِيهِ إِلَّا عَن مَّوْعِدَةٍۢ وَعَدَهَآ إِيَّاهُ فَلَمَّا تَبَيَّنَ لَهُۥٓ أَنَّهُۥ عَدُوٌّۭ لِّلَّهِ تَبَرَّأَ مِنْهُ ۚ إِنَّ إِبْرَٰهِيمَ لَأَوَّٰهٌ حَلِيمٌۭ

And Abraham prayed for his father's forgiveness only because of a promise he had made to him. But when it became clear to him that he was an enemy to Allah, he dissociated himself from him: for Abraham was most tender-hearted, forbearing.

رَبَّنَا ٱغْفِرْ لِى وَلِوَٰلِدَىَّ وَلِلْمُؤْمِنِينَ يَوْمَ يَقُومُ ٱلْحِسَابُ

"O our Lord! cover (us) with Thy Forgiveness - me, my parents, and (all) Believers, on the Day that the Reckoning will be established!

وَٱخْفِضْ لَهُمَا جَنَاحَ ٱلذُّلِّ مِنَ ٱلرَّحْمَةِ وَقُل رَّبِّ ٱرْحَمْهُمَا كَمَا رَبَّيَانِى صَغِيرًۭا

And, out of kindness, lower to them the wing of humility, and say: "My Lord! bestow on them thy Mercy even as they cherished me in childhood."

قَالَ سَلَٰمٌ عَلَيْكَ ۖ سَأَسْتَغْفِرُ لَكَ رَبِّىٓ ۖ إِنَّهُۥ كَانَ بِى حَفِيًّۭا

Abraham said: "Peace be on thee: I will pray to my Lord for thy forgiveness: for He is to me Most Gracious.

وَٱغْفِرْ لِأَبِىٓ إِنَّهُۥ كَانَ مِنَ ٱلضَّآلِّينَ

"Forgive my father, for that he is among those astray;

قَدْ كَانَتْ لَكُمْ أُسْوَةٌ حَسَنَةٌۭ فِىٓ إِبْرَٰهِيمَ وَٱلَّذِينَ مَعَهُۥٓ إِذْ قَالُوا۟ لِقَوْمِهِمْ إِنَّا بُرَءَٰٓؤُا۟ مِنكُمْ وَمِمَّا تَعْبُدُونَ مِن دُونِ ٱللَّهِ كَفَرْنَا بِكُمْ وَبَدَا بَيْنَنَا وَبَيْنَكُمُ ٱلْعَدَٰوَةُ وَٱلْبَغْضَآءُ أَبَدًا حَتَّىٰ تُؤْمِنُوا۟ بِٱللَّهِ وَحْدَهُۥٓ إِلَّا قَوْلَ إِبْرَٰهِيمَ لِأَبِيهِ لَأَسْتَغْفِرَنَّ لَكَ وَمَآ أَمْلِكُ لَكَ مِنَ ٱللَّهِ مِن شَىْءٍۢ ۖ رَّبَّنَا عَلَيْكَ تَوَكَّلْنَا وَإِلَيْكَ أَنَبْنَا وَإِلَيْكَ ٱلْمَصِيرُ

There is for you an excellent example (to follow) in Abraham and those with him, when they said to their people: "We are clear of you and of whatever ye worship besides Allah: we have rejected you, and there has arisen, between us and you, enmity and hatred for ever,- unless ye believe in Allah and Him alone": But not when Abraham said to his father: "I will pray for forgiveness for thee, though I have no power (to get) aught on thy behalf from Allah." (They prayed): "Our Lord! in Thee do we trust, and to Thee do we turn in repentance: to Thee is (our) Final Goal.

رَّبِّ ٱغْفِرْ لِى وَلِوَٰلِدَىَّ وَلِمَن دَخَلَ بَيْتِىَ مُؤْمِنًۭا وَلِلْمُؤْمِنِينَ وَٱلْمُؤْمِنَٰتِ وَلَا تَزِدِ ٱلظَّٰلِمِينَ إِلَّا تَبَارًۢا

"O my Lord! Forgive me, my parents, all who enter my house in Faith, and (all) believing men and believing women: and to the wrong-doers grant Thou no increase but in perdition!"