Is the phrase "If I had money, I would do it again" considered a vow that must be fulfilled, and is a vow constituted without intention if it was merely a fleeting remark, and how many times must this vow be fulfilled if it is indeed one?

A vow (nadhr) is a commitment made by a legally responsible Muslim to God, undertaking an act of worship. It is articulated verbally, using a phrase that indicates commitment, such as: "It is incumbent upon me for the sake of Allah to do such-and-such." As for the statement: "If I had money, I would do it again," this is merely a wish and does not entail any obligation, nor is it considered a vow.