Is a woman who has had an ectopic pregnancy removed considered to be in a state of post-childbirth bleeding (nifas), or in a state of irregular bleeding (istihadah) that requires her to pray? And is it permissible for her to perform tayammum for ghusl if she is in a state of istihadah and water would harm the wound, or should she suffice with wudu'?

The blood a woman sees after a miscarriage, if the fetus's age is less than 81 days, is considered istihadah (non-menstrual vaginal bleeding). From this, the days that coincide with her usual menstrual period are counted as hayd (menstruation), either by distinguishing the blood (by its characteristics) or by investigating and determining it to be 6 or 7 days. If the fetus's age is more than 81 days and human features are discernible, then it is nifas (postnatal bleeding), with a maximum duration of 40 days. Any bleeding beyond that is considered istihadah. If water harms a wound, tayammum (dry ablution) should be performed for it. As for the blood that precedes the miscarriage, it is istihadah.