Is swearing by Almighty God to give away all one's money in charity considered a vow, and what are the implications and consequences of not fulfilling it?

This wording constitutes an oath that can be expiated if the swearer breaks it. It is permissible to break this oath and not give charity, but an expiation for breaking an oath becomes obligatory upon you. This expiation is feeding ten needy persons, or clothing them, or emancipating a slave. If you cannot find any of these, then it is fasting for three days. One should not hasten to swear by Allah.