Fulfilling the vow to fast a month if the daughter recovers

The questioner:
Abu Abd al-Rahman from Jeddah, please come on the line. Come on, Abu Abd al-Rahman, we are with you. Peace be upon you. And upon you be peace. Peace. The television signal, Abu Abd al-Rahman, the television signal is fluctuating between us and you, please. The television signal, listen to me on the phone, please. Peace be upon you. And upon you be peace. Honorable Shaykh, I have been married for fifty years, and I have children; the first, second, and third died before completing forty [days]. Yes, and after that a daughter was born and she passed away at forty [days]. And her mother swore an oath over her. I know you [said] that I should fast. A month.

The Shaykh:
Yes, she is required to fulfill it if the daughter recovers.

The questioner:
She is required to fulfill the vow.

The presenter:
Okay, listen to the answer.

The Shaykh:
Even if she were a hundred years old, the vow remains a liability on her.

The questioner:
What is a vow of knowledge?

The Shaykh:
My brother, this vow is certain. May Allah guide you. This is a certain vow by oath.

The questioner:
The mother of the children is with me.

The Shaykh:
I, I taught you and I am with you. Thank you.

The presenter:
Thank you.