Is it permissible for a woman who has had an IUD inserted and experiences odorless bleeding six days after the cessation of her menstrual period to fast and pray?

If blood appears shortly after the menstrual period, such that its total duration, combined with the previous bleeding and the period of purity between them, is fifteen days or less, then it is considered menses. Fasting during this time is not valid, and the two days must be made up. However, prayer is not prescribed and does not need to be made up.

If the total duration of the bleeding, along with the previous period of purity, exceeds fifteen days and nights, then it is considered istihadah (non-menstrual bleeding). In this case, both fasting and prayer are valid and acceptable.