Allahumma-ghfir lahu warhamhu wa 'afihi wa'fu 'anhu, wa akrim nuzulahu, wa wassi' mudkhalahu, waghsilhu bil-ma'i wath-thalji wal-barad, wa naqqihi minal-khataya kama naqqaytath-thawbal-abyada minad-danas.
O Allah, forgive him and have mercy on him, grant him safety and pardon. Honor his reception, expand his entrance, wash him with water, snow and hail, and cleanse him of sins as You cleanse a white garment of filth.
— Muslim · 963
The Prophet's ﷺ supplication for the deceased, applicable for deceased parents.
Rabbi awzi'ni an ashkura ni'matakal-lati an'amta 'alayya wa 'ala walidayya wa an a'mala salihan tardahu wa aslih li fi dhurriyyati, inni tubtu ilayka wa inni minal-muslimin.
My Lord, enable me to be grateful for Your favor which You have bestowed upon me and upon my parents, and to do righteousness of which You approve. And make righteous for me my offspring. Indeed, I have repented to You, and indeed, I am of the Muslims.
— Al-Ahqaf · 46:15
Major Quranic supplication linking gratitude to Allah and to parents, and asking for righteous offspring.
Wa qada Rabbuka alla ta'budu illa iyyahu wa bil-walidayni ihsana. Imma yablughanna 'indakal-kibara ahaduhuma aw kilahuma fala taqul lahuma uffin wa la tanharhuma wa qul lahuma qawlan karima.
And your Lord has decreed that you not worship except Him, and to parents, good treatment. Whether one or both of them reach old age while with you, say not to them a word of disrespect and do not repel them but speak to them a noble word.
— Al-Isra · 17:23
Quranic verse directly linking obedience to Allah with good conduct toward aging parents. The Prophet ﷺ said that kindness to parents is among the most beloved deeds to Allah.
Rabbana wa adkhilhum jannati 'adninil-lati wa'adtahum wa man salaha min aba'ihim wa azwajihim wa dhurriyyatihim, innaka antal-'Azizul-Hakim.
Our Lord, and admit them to Gardens of Eternity which You have promised them, and whoever was righteous among their parents, their spouses, and their offspring. Indeed, it is You who is the Mighty, the Wise.
— Ghafir · 40:8
Supplication of the angels who bear the Throne for the reunion of believers with their families in Paradise.
Wa wassaynal-insana bi walidayhi, hamalathu ummuhu wahnan 'ala wahnin wa fisaluhu fi 'amayni anishkur li wa li walidayk, ilayyal-masir.
And We have enjoined upon man regarding his parents - his mother carried him in weakness upon weakness, and his weaning is in two years - Be grateful to Me and to your parents; to Me is the final destination.
— Luqman · 31:14
Quranic verse reminding of parents' sacrifices, especially the mother's, and commanding gratitude toward Allah and toward them.