The Ruling on Fulfilling a Vow When Unable to Do So

Question:
I made a vow to pay a sum of one thousand pounds to help build a mosque in the village if I traveled to any Arab country. In fact, perhaps Allah will bestow upon me and I will come to Saudi Arabia as a teacher in the schools of the Kingdom, but I am saving this amount to build my future. Should I reduce the amount, or perhaps it will be forgiven, or am I obligated to pay the full amount? May Allah reward you with good.

Answer:
If you have an amount of money in excess of the necessities for yourself and your children, then it is obligatory for you to fulfill it. If you have an amount of money that exceeds your needs and the needs of those you are responsible for, then it is obligatory for you to fulfill your vow. However, if you are only able to provide what is sufficient for yourself and your children, then nothing is obligatory upon you, because you are not in a position to do so. At that time, you should wait until Allah the Exalted makes it easy for you to fulfill this vow, and then you fulfill it. The Prophet (peace and blessings be upon him) said that a person is not held accountable for what he does not possess, as the Prophet (peace and blessings be upon him) said: the person, or as the Prophet (peace and blessings be upon him) said.