Sayyidah Sawdah bint Zam'ah (may Allah be pleased with her) narrates: The Prophet (peace and blessings be upon him) said: "The woman with istihadah (irregular bleeding) will leave the prayer during the specific days of menstruation in which she used to refrain before; then she will take the ritual bath (ghusl) once, and then perform ablution (wudu) at the time of every prayer."
Imam al-Tabarani recorded it in al-Mu'jam al-Awsat; its chain states that Ja'far narrated it from Sayyidah Sawdah (may Allah be pleased with her), and I do not know this person.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الطهارة / 1543
Hadith Gradingمحدثین:إسنادہ ضعیف
Hadith Takhrij«أخرجه المعجم الأوسط للطبراني برقم: 9180»