There is no such vow in Greek myth, for Persephone was QUEEN of Hades.
You might, however, be thinking of the decree Zeus made for the return of Persephone to Olympus. Because Demeter refused to let anything grow until her daughter was returned, Zeus said that Hades must give her back, provided she had not eaten anything while in his realm. Since she had eaten 6 pomegranate seeds, she was forced to spend 6 months of the year with Hades and the rest she was allowed to do with as she pleased.
Hades is famous because he is a major Greek God. He is God of the underworld and vowed to never have children.
The gunslinger vowed to rob the bank without killing anyone.
me when me when the when
To an extent, it could be possible that Hades does like running the Underworld, but truth is he was assigned to rule in the Underworld whether he liked it or not. He then vowed revenge on Zeus for forcing him to run the Underworld. In a way he is not evil at all, just angry.
Walt Disney's Peter Pan
She was exposed to alcoholismas a child and vowed never to drink
As a boy, he shot a bear and vowed to never hunt again
Artemis is Goddess of the Hunt, and vowed never to marry or have kids, so she has no husband.
He Didn't Because He Vowed Never To Walk On The Trusell
What kind of question Is this
Winston Churchill
No, Athena vowed never to marry and to remain a immortal virgin goddess.