Is the fast of one who intends to fast after the Fajr adhan valid?

Question:
If I do not remember to fast the next day of Ramadan, and I have nothing that prevents fasting, by the permission of Allah the Exalted, do I have to make up that day? And if a person intends to fast Ramadan during the adhan, and does not know whether the mu'adhdhin is calling before the dawn breaks or after it, what is the ruling on his intention? May Allah reward you with good.

Answer:
It is necessary to have the firm resolve and intention to fast from the night, due to the saying of the Messenger (peace and blessings be upon him) If one intends to fast before the dawn breaks, his fast is valid. However, if he reaches the morning while hesitating, not knowing whether he will fast or not, then the obligatory fast is not valid, because a part of the day has passed, and he did not resolve to fast during that part, so he must make it up.
As for voluntary fasting, it is permissible for a person to intend it during the day, on the condition that he has not done anything that contradicts fasting before his intention, from after the dawn breaks until his intention. The fast is valid with an intention made during the day if he has not done anything that contradicts fasting, such as eating, drinking, or intercourse, after the dawn breaks. Yes.