To the newlywed1 du'a

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

Reference:Abu Dawud, Ibn Majah and At-Tirmidhi. See also Al-Albani, Sahih At-Tirmidhi 1/316.Hisnul Muslim 190

بارَكَ اللّهُ لَك وَبارَكَ عَلَـيْك وَجَمَعَ بَيْـنَكُما في خَـيْر

Transliteration

Bārakallāhu lak. wa bāraka `alayk. wa jama`a baynakumā fī khayr.

Translation

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