[Machine] Ali and Ibn Mas'ud used to say, "A woman experiencing Istihadah (continuous vaginal bleeding outside of menstruation) should perform Wudu (ablution) before every prayer."
أَنَّ عَلِيًّا وَابْنَ مَسْعُودٍ كَانَا يَقُولَانِ «الْمُسْتَحَاضَةُ تَغْتَسِلُ عِنْدَ كُلِّ صَلَاةٍ»