Answer
In the Name of Allah, Most Gracious, Most Merciful.
All praise and thanks are due to Allah, and peace and blessings be upon His Messenger.
In this fatwa:
Praying during miscarriage bleeding depends on whether the bleeding is considered menses or Istihadhah (irregular bleeding). Understanding the nature of the bleeding and following Islamic guidelines on cleanliness and ablution will ensure your prayers are valid. Always seek scholarly advice if you’re unsure of specific rulings.
In his response to your question, Sheikh Ahmad Kutty, a senior lecturer and Islamic scholar at the Islamic Institute of Toronto, Ontario, Canada, states:
Understanding Miscarriage Bleeding in Islam
The bleeding you are experiencing following your miscarriage after 6 weeks of pregnancy is not regarded as nifas (post-natal bleeding). Rather, it can be considered as menses unless it exceeds the acceptable duration of menses.
In other words, if the blood resembles menses in color and texture, it shall be treated as menses unless it exceeds fifteen days.
If it exceeds fifteen days, then you should bathe yourself and resume your prayer afterwards except that you are required to observe the following condition: If bleeding continues, you ought to wash your private prior to each prayer and wear a pad and perform ablutions as close to the prayer as possible. You need not worry about bleeding during the course of your prayer. Your prayer is considered valid, as long as you fulfill the above requirements.
When Miscarriage Bleeding Resembles Menstrual Blood
If, however, the blood does not quite resemble menses in color and texture, then you ought to follow the normal pattern of your menses.
In other words, if you were in the habit of experiencing menses 6 or 7 days every month, then you should set aside the same number of days as your period of menses, after which you are to bathe yourself and resume your prayer.
But, while doing so, follow the same method as described above in regard to washing yourself and performing ablutions.
Read also:
When to Resume Prayer after Abnormal Extension of Menses
After How Many Days of Period Can You Pray in Islam?
What to Do If Your Period Is Longer Than Usual
When to Start Praying after Period
Almighty Allah knows best.
Source: www.askthescholar.com