بَارَكَ اللَّهُ لَكَ وَبَارَكَ عَلَيْكَ وَجَمَعَ بَيْنَكُمَا فِي خَيْرٍ
Transliteration
Barakallahu laka wa baraka 'alayka wa jama'a baynakuma fi khayr
English meaning
May Allah bless you, shower blessings upon you, and bring you together in goodness.
When is it recited?
Said to the newly married couple.
Source
Abu Dawud, Nikah 37, 2130; Tirmidhi, Nikah 7, 1091