Umm Habibah had a prolonged flow of blood for seven years. The Messenger of Allah ﷺ commanded her to take bath; so she used to take bath for every prayer.
أَنَّ أُمَّ حَبِيبَةَ اسْتُحِيضَتْ سَبْعَ سِنِينَ فَأَمَرَهَا رَسُولُ اللَّهِ ﷺ أَنْ تَغْتَسِلَ فَكَانَتْ تَغْتَسِلُ لِكُلِّ صَلاَةٍ