The ruling on fulfilling a vow when there is doubt about its execution

Question:
May Allah reward you with good and do you well. A woman says: She made a vow that if her daughter got married without falling ill, she would hold a wedding feast. Her daughter got married without falling ill, but she is unsure whether she fulfilled that vow or not? What do you advise her to do now? May Allah reward you with good.

Answer:
There is no doubt that fulfilling a vow, if it is a vow of obedience, is obligatory, based on the saying of the Messenger (peace and blessings be upon him) She vowed to hold a feast if her daughter got married while she was free from illness. If the intended condition was met, she must fulfill her vow, especially if the purpose of this feast is to feed the poor and the needy, in which case it becomes obligatory, because it is a vow of obedience, a vow of charity. This vow remains a liability on her until she is certain that she has executed it. As long as she is not certain that she has executed it, it is obligatory for her to execute it so that she may be free of the responsibility with certainty. Yes.