Lady Aisha (may Allah be pleased with her) said: Indeed, it was that woman, Sahlah bint Suhail bin Amr, who suffered from istihada (non-menstrual bleeding), and the Messenger of Allah (peace and blessings be upon him) ordered her to perform ghusl (ritual bath) for every prayer. When this became difficult for her, he (peace and blessings be upon him) instructed her to perform Zuhr and Asr with one ghusl, and Maghrib and Isha with one ghusl, and to perform ghusl for the Fajr prayer.