بَارَكَ اللَّهُ لَكَ، وَبَارَكَ عَلَيْكَ، وَجَمَعَ بَيْنَكُمَا فِي خَيْرٍ
Barakallahu laka, wa baraka 'alayka, wa jama'a baynakuma fi khayr
Allaah ha kugu barakeeyo, ha kugu soo dejiyo barakada, lamaanahaana ha isku keeno khayr.
Say to newlyweds after marriage
The Prophet (PBUH) would say this dua for newlyweds, asking Allah to bless their union.