إذا ابتدأت مع البلوغ مستحاضة فحيضها عشرة أيام
When irregular bleeding accompanies the onset of puberty, the discussion assigns ten days as menstruation in this specific case.
The analysis differs from the previous example. Where legal status is uncertain and no change has been established, an earlier status is not overturned without proof; but an independently established time limit must be followed where applicable.
The text distinguishes bleeding below and above ten days. This shows why presumption cannot operate without regard to a recognized legal limit or direct evidence.