Pattern 1: One day of blood, eight days of purity, then one day of blood. Abu Yusuf treats the full ten days as hayd, while Muhammad, Zufar and al-Hasan ibn Ziyad do not classify it as hayd in the cited comparison.
Pattern 2: Three days of blood, six days clean, one final bleeding day. Abu Yusuf treats the ten days as hayd; Muhammad treats the first three as hayd and the remainder differently.
Thus intervening purity requires examination of the exact pattern.
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Menstruation: Duration, Worship, Cessation and Intervening Purity
Pattern 1: One day of blood, eight days of purity, then one day of blood. Abu Yusuf treats the full ten days as hayd, while Muhammad, Zufar and al-Hasan ibn Ziyad do not classify it as hayd in the cited comparison.
Pattern 2: Three days of blood, six days clean, one final bleeding day. Abu Yusuf treats the ten days as hayd; Muhammad treats the first three as hayd and the remainder differently.
Thus intervening purity requires examination of the exact pattern.