Does a vow made by one partner bind the others?

Question:
This message came to us from Muhammad Sa'id Abu Ayn. He says in his message, Muhammad: I bought a diesel car for five passengers on installments. I paid two thousand dinars when I received the car, and two thousand remained. I pay one hundred dinars every month. I had a partner who was a relative of mine, so I said in front of my partner: If the car's installments are paid off, I will slaughter a cow as a vow. And the car's installments were paid off, and we sold the car. I asked my partner to fulfill the vow, but he refused.
What is the solution in your view? With much thanks, am I obligated to fulfill it alone or not?
May Allah guide you.

Answer:
This is if he intended to commit to it, because when the car was paid off, he committed to this. He made a vow to Allah that he would slaughter it. And what did he name the sacrifice?

The presenter: A cow.

The Shaykh: A cow. If he committed to this, it is obligatory for him alone. His partner is not obligated to do so unless he also committed to it. As for him, it is obligatory for him; because the Messenger of Allah (peace and blessings be upon him) said: So if Allah pays off the installments from the car's effort, and from the proceeds obtained from the car; he slaughters it if he said: If the car is paid off, I will slaughter this as a vow. So he said: A vow, or he said: It is upon me for Allah, or charity for Allah; he slaughters it and gives it to the poor, distributing it among the poor. Unless he intended to distribute it among the neighbors, or among his relatives, or he intended to slaughter it in his home and invite the neighbors or relatives and friends to it, there is no harm in his intention. Actions are by intentions. But if he had no intention, the cow is slaughtered and distributed among the poor in his country. Yes.