May a member of Hanafi school imitate Shafi’i school with regard to ablution when a part of his body bleeds?
It is permissible for a member of a Hanafi school who has bleeding anywhere in his body to imitate Shafi’i school in the event that he has hardship in performing ablution or that he fears to miss Friday, funeral, or eid prayers. Because, in matters that are in conflict between schools, it is not obligatory to adhere to a particular school, and it is permissible to act with the opinion of another school based on an excuse. (Ibn Abidin, Radd al-Muhtar, I, 177).
Source: Presidency Of Religious Affairs The Turkey, High Board of Religious Affairs FATWAS