Which of the two fatwas should be followed regarding the yellowish or brownish discharge (kudra and sufra) connected to blood for 14 or 15 days after an IUD insertion, knowing that one fatwa indicates that any blood exceeding the usual period is considered menstruation unless it exceeds fifteen days, while the other fatwa makes an exception for this if the blood exceeding the usual period changed due to the IUD, in which case it is considered istihadah (non-menstrual bleeding)?

Blood is considered menses as long as it falls within the possible timeframe, even if it exceeds the usual period, provided it does not exceed fifteen days. As for yellow or brownish discharge connected to blood, its ruling is that it is menses if it is connected to the blood, as long as its duration, together with the blood that preceded it, does not exceed fifteen days. If a woman experiences purity and then sees yellow or brownish discharge, it is not considered anything. What was mentioned in the other fatwa, that blood might be istihada (non-menstrual bleeding), is interpreted as applicable when trustworthy doctors determine that the blood discharge is from a wound or hemorrhage, in which case it is ruled to be istihada.