Hisnul Muslim

Supplication said to the newlywed

بَارَكَ اللَّه ُُ لَكَ، وَبَارَكَ عَلَيْكَ، وَجَمَعَ بَيْنَكُمَا فِي خَيْر.ٍ

'May Allah bless for you (your spouse) and bless you, and may He unite both of you in goodness.'