Wedding vow
From Tardis Wiki, the free Doctor Who reference
Wedding vows were vows which were invoked in a formal wedding ceremony.
Pete Tyler stumbled on his vows when he got married to Jacqueline Tyler. (TV: Father's Day)
On the anniversary of her wedding to Rory Williams, Amy Pond inadvertently agreed to wedding vows which married her to Henry VIII. As she recalled, "somebody was talking, and I just said yes." (TV: The Power of Three)