اللَّهُمَّ اغْفِرْ لِحَيِّنَا وَمَيِّتِنَا وَصَغِيرِنَا وَكَبِيرِنَا وَذَكَرِنَا وَأُنْثَانَا وَشَاهِدِنَا وَغَائِبِنَا
Allahummagh-fir li-hayyina wa mayyitina wa saghirina wa kabirina wa dhakarinaa wa unthana wa shahidina wa gha'ibina
O Allah, forgive our living and our dead, our young and our old, our males and our females, our present and our absent.
Part of the Janazah (funeral) prayer du'a. It covers every possible category of Muslim: living, dead, young, old, male, female, present, absent. No one is excluded. When you say this at a funeral, you are not just praying for the deceased — you are praying for the entire Ummah at once. It is one of the most inclusive du'as in the Sunnah.
Related Du'as
اللَّهُمَّ اجْعَلْ خَيْرَ عُمُرِي آخِرَهُ وَخَيْرَ عَمَلِي خَوَاتِمَهُ وَخَيْرَ أَيَّامِي يَوْمَ أَلْقَاكَ
O Allah, make the best of my life its last part, the best of my deeds their conclusions, and the best of my days the day I meet You.
Hasanإِنَّ لِلَّهِ مَا أَخَذَ وَلَهُ مَا أَعْطَى وَكُلُّ شَيْءٍ عِنْدَهُ بِأَجَلٍ مُسَمًّى
To Allah belongs what He took, and to Him belongs what He gave, and everything with Him has an appointed time.
Sahihاللَّهُمَّ إِنْ كَانَ مُحْسِنًا فَزِدْ فِي إِحْسَانِهِ وَإِنْ كَانَ مُسِيئًا فَتَجَاوَزْ عَنْ سَيِّئَاتِهِ
O Allah, if he was a doer of good, then increase his good deeds, and if he was a wrongdoer, then overlook his misdeeds.
Hasanاللَّهُمَّ إِنِّي أَسْأَلُكَ الْجَنَّةَ وَأَعُوذُ بِكَ مِنَ النَّارِ
O Allah, I ask You for Paradise and seek refuge from the Fire.
Sahih