Is it permissible to retract a vow to donate a portion of money to a specific person after the temporary improvement that person experienced, and is it possible to change the beneficiaries of the charity to include close relatives such as parents or the wife?

The aforementioned vow consists of two parts:

First: The absolute charity for which no specific recipient was designated. It should be given to the poor and needy, and it is not permissible to give it to those whose maintenance is obligatory, such as parents, children, and wife. Since the amount is unspecified, it is permissible to give in charity whatever is easy, be it a little or a lot.

Second: The vow to give this specific assistant money in return for her help. This is a vow of justification to a specific individual, and it must be fulfilled. Scholars have differed regarding the necessity of specifying the vowed recipient. The most preponderant opinion is that it is binding, and it is not permissible to give it to anyone else, due to the attachment of the specified person's right to it. It is not permissible to give this part to his parents, children, or wife. However, if the assistant refuses the money, then nothing is binding on the one who made the vow, and its obligation is dropped.

If the one who made the vow intended to give the money as charity and dedicate its reward to the assistant, then it is not permissible to change the intention. However, since the amount is unspecified, the vow can be divided between the assistant and the parents.