It is narrated from Sayyidah Aishah (may Allah be pleased with her) that Sayyidah Umm Habibah (may Allah be pleased with her) had istihadah. She mentioned this to the Prophet (peace and blessings be upon him), and he (peace and blessings be upon him) said: "This is not menstruation, but a kick in the womb. So she should wait for the extent of her menstruation, as long as you used to menstruate, and leave prayer; then perform ghusl for every prayer and pray." (b) Abu Bakr (may Allah have mercy on him) said: Some of our shaykhs said that the hadith of Ibn al-Had is not mahfuz (preserved). (c) The Shaykh (may Allah have mercy on him) said: Muhammad bin Ishaq bin Yasar narrated this hadith from al-Zuhri, from Urwah, from Sayyidah Aishah (may Allah be pleased with her).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحيض / 1640