✅Answer:

1 عِيصِ بْنِ الْقَاسِمِ عَنْ أَبِي عَبْداللَّه قال: سَأَلْتُهُ عَنِ امْرَأَةٍ طَمِثَتْ فِي شَهْرِ رَمَضَانَ قَبْلَ أَنْ تَغِيبَ الشَّمْسُ قَالَ تُفْطِرُ حِينَ تَطْمَثُ

📚Tahdhib, Vol. 1, p. 393

Is 'ibn Qasim said: I asked Imam Sadiq (peace be upon him) about a woman who gets her period in the month of Ramadan before the sun sets. The Imam said: 'She breaks her fast the very moment she gets her period!'

2 مُحَمَّدِ بْن مُسْلِمٍ عَنْ أَبِي جَعْفَر فِي الْمَرْأَةِ تَطْهُرُ فِي أَوَّلِ النَّهَارِ فِي رَمَضَانَ أَ تُفْطِرُ أَوْ تَصُومُ قَالَ تُفْطِرُ وَ فِي الْمَرْأَةِ تَرَى الدَّمَ مِنْ أَوَّلِ النَّهَارِ فِي شَهْرِ رَمَضَانَ أَتُفْطِرُ أَمْ تَصُومُ قَالَ تُفْطِرُ إِنَّمَا فِطْرُهَا مِنَ الدَّم

📚Tahdhib, Vol. 1, p. 153

Imam Baqir (peace be upon him) was asked about a woman who becomes pure from her period at the beginning of the day in Ramadan, whether she should fast or break her fast. He said: 'She breaks her fast.'

And he was asked about a woman who gets her period at the beginning of the day in Ramadan, whether she should break her fast or fast. He said: 'She breaks her fast!'

3️⃣ Halabi said: I asked Imam Sadiq (peace be upon him) about a woman who starts the day fasting, and then when the day is well advanced or at the end of the day, she gets her period. Should she break her fast? He said: 'Yes, even if it is at the time of Maghrib (sunset), she should break her fast!'

He said: And I asked about a woman who becomes pure from her period at the beginning of the day in Ramadan and performs ghusl but has not eaten anything. I asked what she should do on that day. He said: 'She breaks her fast, as her menses was the reason for her breaking the fast!'

📚Kafi, Vol. 4, p. 135

4️⃣FROM AL-ZUHRI, FROM ALI IBN AL-HUSSEIN, in a hadith, he said: As for the disciplinary fast, it is when a boy who is nearing puberty is made to fast for discipline, and it is not obligatory. And likewise, he who breaks his fast for a reason at the beginning of the day and then becomes strong for the rest of his day is commanded to abstain from food for the rest of his day for discipline, and it is not obligatory. And likewise, the traveler who eats at the beginning of the day and then reaches his family is commanded to abstain for the rest of the day, but it is not obligatory. And likewise, the menstruating woman, when she becomes pure, she abstains for the rest of her day.

📚Tahdhib, Vol. 4, p. 295

Imam Sajjad (peace be upon him) said in a hadith: 'As for the disciplinary fast, it is that a child, when he is nearing the age of puberty, is made to fast for discipline, and it is not an obligation!'

'And likewise, he who breaks his fast at the beginning of the day due to an excuse and then becomes strong for the rest of the day is commanded to abstain from eating for the rest of the day as a form of discipline, and it is not an obligation.'

'And also, the traveler, when he eats at the beginning of the day and then reaches his family, he is commanded to abstain for the rest of the day, but it is not an obligation.'

'And likewise, the menstruating woman, when she becomes pure (during the day), she abstains for the rest of the day!'

5 مُحَمَّد بن مسلم قال: سَأَلْتُ أَبَا جَعْفَرٍ عَنِ الْمَرْأَةِ تَرَى الدَّمَ غُدْوَةً أَوِ ارْتِفَاعَ النَّهَارِ أَوْ عِنْدَ الزَّوَالِ قَالَ تُفْطِرُ وَ إِذَا كَانَ ذَلِكَ بَعْدَ الْعَصْرِ أَوْ بَعْدَ الزَّوَالِ فَلْتَمْضِ عَلَى صَوْمِهَا وَ لْتَقْضِ ذَلِكَ الْيَوْم

📚Tahdhib, Vol. 1, p. 393

Muhammad ibn Muslim said: I asked Imam Baqir (peace be upon him) about a woman who gets her period (in Ramadan) at the beginning of the day, or when the day is well advanced, or at noon. He said: 'She breaks her fast, and if it is after Asr or after noon, she should continue her fast, but make it up later!'

6 أَبي بصير قال: سَأَلْتُ أَبا عبدالله عن امْرَأَةٍ رَأَتِ الطُّهْر أَوَّلَ النَّهار قال تُصَلِّي و تُتِمُّ یَومَهَا و تَقْضِي

📚Tahdhib, Vol. 4, p. 253

Abu Basir said: I asked Imam Sadiq (peace be upon him) about a woman who becomes pure from her period at the beginning of the day (in Ramadan). He said: 'She prays and completes that day (in a state of fasting) and makes it up later!'

✅ Points from the above narrations:

1️⃣ Fasting is not for a menstruating woman, even if her period occurs during a part of the day.

2️⃣ If a woman gets her period during the day in Ramadan, her fast is broken whenever she gets her period, and she can eat and drink. However, according to narration 5️⃣, if her period occurs after noon, she continues that fast but makes it up later. Of course, this is not obligatory for her, and she has the permission to break her fast.

3️⃣ If a menstruating woman in Ramadan becomes pure during the day from her period, although she has permission to eat, drink, and do other things that break the fast on that day, it is recommended as a form of discipline that she abstains for the rest of that day. However, this is not an obligation.

4️⃣ The day in Ramadan that a woman gets her period or becomes pure from her period during it must be made up along with the other days of her period, even if she abstained for the rest of the day as a form of discipline.