[Machine] Regarding menstruating women, it is stated by Al-Hasan that "She should perform ablution (cleaning) from the time of Dhuhr prayer until the Dhuhr prayer of the next day."
عَنِ الْحَسَنِ فِي الْمُسْتَحَاضَةِ «تَغْتَسِلُ مِنْ صَلَاةِ الظُّهْرِ إِلَى صَلَاةِ الظُّهْرِ مِنَ الْغَدِ»