It was narrated that Ibn 'Umar said: "The Messenger of Allah (ﷺ) said: 'A vow does not bring anything forward or put it back; it is just a means of taking wealth from the miserly.'"
It was narrated from Abu Hurairah that the Messenger of Allah (ﷺ) said: "A vow does not bring anything to the son of Adam that has not been decreed for him. It is just a means of taking wealth from the miserly."