In al-Mu'jam al-Awsat it is reported from Sayyiduna Jabir (may Allah be pleased with him): The Prophet (peace and blessings be upon him) ordered the woman with istihadah (irregular bleeding) to perform ablution (wudu) for every prayer. The narrators of the first report are the narrators of the "Sahih", and among the narrators of al-Awsat is Abdullah bin Muhammad bin Aqil, about whose use as evidence there is disagreement.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الطهارة / 1542