The ruling on forming the intention for fasting and the ruling for the menstruating woman

Question:
We ask Allah, Mighty and Majestic, for His great bounty. Honorable Shaykh, if we were to speak about the intention and forming the intention for fasting this month, what is its ruling, of course for both women and men? And if a woman is menstruating and she thinks, or does not know, that she will become pure before the dawn breaks or after it, what is the position in such a case?

Answer:
Fasting is a form of worship among the various acts of worship, and acts of worship are not valid except with an intention. The Prophet (peace and blessings be upon him) said: . So acts of worship are not valid except with an intention. The intention is the purpose in the heart; the intention is the purpose and resolve that is in the heart. It is not permissible to verbalize it, because verbalizing it is a religious innovation (bid'ah), and its place is the heart. As for obligatory fasting, whether it is the fasting of Ramadan, a vow, or an expiation, every obligatory fast requires that the intention be formed at night, that it be formed before the dawn breaks, so that the intention accompanies the fasting throughout the entire day. So if a person reaches the state of being in the morning without having intended to fast, and then he intends to fast after the morning has begun, even if he has not eaten or drunk, his fast is not valid, because a part of the day has passed for him without the intention accompanying it. As for voluntary fasting, it is valid with an intention formed during the day, on the condition that he has not eaten or drunk after the dawn broke. So if he reached the morning without having eaten or drunk, and then he intended to fast voluntarily, that is valid from him, as the Prophet (peace and blessings be upon him) did. As for the obligatory fast, the intention must be from the night, meaning before the dawn breaks, in the saying of the Prophet (peace and blessings be upon him): "There is no fast for one who does not form the intention from the night," or "There is no fast for one who does not gather the intention from the night," and other such hadiths. And the menstruating woman has no fasting obligation upon her until she becomes pure.
So if she becomes pure, if she becomes pure before the dawn by the blood stopping from her, she intends to fast even if she has not taken a ritual bath (ghusl). She intends to fast, eats the pre-dawn meal (suhur), and fasts, then she takes the ritual bath afterwards, because it is not a condition of fasting that a person be in a state of ritual purity. So if she becomes pure and the blood stops from her before the dawn breaks, she eats the pre-dawn meal and fasts, then she takes the ritual bath afterwards. But if the blood stops from her during the day, she abstains for the rest of the day. If the blood stops from her during the day, she abstains for the rest of the day and makes up that day after Ramadan. Yes.

The presenter:
May Allah bless you,