Hisnul Muslim 190

To the newlywed

بَارَكَ اللَّهُ لَكَ، وَبَارَكَ عَلَيْكَ، وَجَمَعَ بَيْنَكُمَا فِي خَيْرٍ

Baarakallaahu laka, wa baaraka 'alayka, wa jama'a baynakumaa fee khayrin.

May Allah bless you, and shower His blessings upon you, and join you together in goodness.