Does having a bath invalidate the fast? Can having a bath invalidate the fast? Is the fast broken by taking a bath? Will having a bath affect the validity of the fast?
Having a bath does not invalidate the fast as long as water is not taken in through mouth or nose and reach the digestive organ. As a matter of fact, Aisha and Ummu Salama informed that the Prophet Muhammad (saw) had a bath after imsak in Ramadan (Bukhari, Sawm, 25). In this regard, a fasting person may have bath with the condition of not taking any water to stomach through mouth or nose (al-Fatawa al-Hindiyyah, I, 220).
Source: Presidency Of Religious Affairs The Turkey, High Board of Religious Affairs FATWAS