What is the ruling on bleeding and prayer after the miscarriage of a fetus that is seven weeks and two days old?

The summary of the fatwa is that the blood discharged after a miscarriage is considered nifas (post-natal bleeding) if human features are discernible in the aborted fetus. It is not considered nifas before that. The minimum period for human features to become discernible is 81 days. If it is nifas, the woman refrains from prayer and fasting. However, if human features are not discernible in the fetus, the blood is considered istihada (irregular bleeding) and does not prevent prayer and fasting, except if it coincides with her regular menstrual period, in which case it is considered menses. The period mentioned in the question, which is 51 days, is not long enough for human features to become discernible, so the blood is not nifas, but rather istihada, unless it coincides with her regular menstrual days, in which case it is menses.