The Difference Between Vowing a Deed and Merely Intending It

Question:
If a person vows to fast for a month, and then some change of circumstances occurs, what is required of him?

Answer:
This question is ambiguous: If his intention was to give charity, meaning he made a vow, saying, "A charity for the sake of Allah that I will fast for a month," then this is called a vow, not charity; it is called a vow. So he must fulfill his vow if he is able to do so. If he is not able, it remains a debt on him until he is able, based on the saying of the Prophet (peace and blessings be upon him): .
As for if it was merely an intention that he would give charity, or if he said, "If Allah wills, I will fast," then nothing is required of him. It is only required of him if he said, "I vow to Allah," or "It is upon me for Allah," or "A charity for Allah that I will fast so much," or "I will pray so much." In that case, it is required of him. If an obstacle prevents him, such as illness or travel, he does it afterwards. Yes.

The presenter : May Allah reward you with good.