English: It was taught: Whence do we know that the blessing of bridegrooms is from the Torah? As it is said “And they blessed Rivkah.”
On the daf / in context: The verse is cited as an asmachta for the practice of birchas chasanim; Tosafot note that the plain sense is not the formal sheva berachos, yet the language supplies a Torah root for blessing the couple.
Type of Learning
Custom (Bavli — Torah source for blessing the bride)
What Is Learned
Blessing a bride (and by extension the wedding blessings) has a Torah basis in the blessing given to Rivkah by her family.