the_debt_of_time

"I, Hermione Potter, give to you, Sirius Black, my love, my friendship, my support,
and my protection. I take your name as my own and uphold it with honour and respect. I
pledge to you our firstborn child to serve as your heir, who will carry on the legacy of our
Houses so that our courage and our craft will always be pure." She smiled as she spoke
their combined House words, noting that Narcissa and Andromeda were dabbing at the
tears in their eyes. "I willingly bind myself to you until death separates us, when our souls
will wait for one another in the afterlife to be united once again. I swear this vow upon my
magic. Suscipiam illud vinculum."
The red cord around her wrist turned silver.
Mia smiled and mouthed, I love you.
Sirius sighed, wondering how in the hell he ended up so lucky.
"Sirius Black, turn to your new Lady Wife and make your vow."
"I, Sirius Black, give to you, Hermione Potter, my love, my friendship, my support,
and my protection, though you'll hardly need it," he said with a sly grin. "I willingly bind
our Houses together knowing that you will help me cleanse my own of all darkness, and
reignite the magic of yours. I pledge to you my wand to serve and defend you, and my life
to be given for any purpose you have need, to give you as many children as your heart
desires, and to raise them to know that our courage and craft will always be pure. I willingly
bind myself to you until death separates us, when our souls will wait for one another in the
afterlife to be united once again. I swear this vow upon my magic. Suscipiam illud vinculum."
The black cord around his wrist turned silver, intertwining with the single gold cord
wrapped between them.
Mia and Sirius gasped simultaneously as the physical cords tying them together
glowed, physically representing the Soul Bond between them sealing itself together. Sirius
could feel as magic seeped inside the thread, filling every break, tear, hole, and gap.
The bond briefly felt as though it were on fire, like metal being put into a forge to
be reshaped, only to be plunged into water a moment later, solid as unbreakable steel. Their
hearts beat rapidly—and in sync—as the magic settled over them.
"Holy shit," Sirius whispered, his skin still vibrating as he stared at Mia.
She was shaking, too, but she smirked at his words and muttered, "Poet."
Arthur laughed at the couple and joyfully announced, "I now declare you bonded
for life!"