#251 Khalifah ibn Khayyat informed us, Ghundar narrated to us, Shu'bah narrated to us, from Qatadah, from 'Ikrimah, who said: "The woman experiencing chronic non-menstrual bleeding (mustahadah) and the one whose menstruation is irregular—menstruating once in a month and twice in another month—their waiting period ('iddah) is three months."