The mitzvah of hachnasas kallah is immeasurable. It is written in the Mishnah, Tractate Peah: “visiting the sick, providing for a bride, escorting the dead”, to teach us that a sick person who is involved with providing for a bride will not reach the point of escorting the dead, in the merit of this important mitzva.
Agudas Achim helps with a respectable sum of money for wedding expenses for those orphaned brides or needy grooms, so they can get married respectably.
To show their thanks and appreciation, the bride and groom pray and bless the donors on their wedding day, that they merit blessing and success and great salvation.