Ibn Jabir (may Allah be pleased with them both) narrates from his father that the daughter of Murshid, an Ansari woman, came to the Prophet (peace and blessings be upon him) and said: I find my menstruation has become irregular. He (peace and blessings be upon him) said: "How?" She said: It comes to me, and when I become pure from it, it returns to me again. He (peace and blessings be upon him) said: "When you see that, wait three (days)." (b) Ibn Ishaq says that this narration is weak. (c) It is also possible that purity often occurs in the middle of menstruation, and then after that menstruation begins again. (d) The Shaykh says: Haram bin Uthman is weak; he is not a proof.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحيض / 1568