Does the bleeding caused by hemorrhoids nullify ablution?
As the ablution is invalidated by hemorrhoid or bleeding of any other organ according to Hanafis, a person who has constant bleeding may benefit from the conveniences provided to excused persons. However, the bleedings that do not leak and overflow the place from which it comes do not invalidate ablution (Mawsili, al-Ikhtiyar, I, 49-50). According to Shafi’i and Maliki schools, bleeding does not invalidate ablution regardless of its quantity and quality (Ibn Qudamah, al-Mughni, I, 247).
Source: Presidency Of Religious Affairs The Turkey, High Board of Religious Affairs FATWAS