The ruling on touching the private parts during the full ritual bath

Question:
Honorable Shaykh, may Allah reward you, regarding the private parts during the bath: does it obligate me to perform the ablution after the full ritual bath, even if I intended the ablution with the full ritual bath?

Answer:
No, if you intended to perform the ablution along with the full ritual bath, touching the private parts does not harm you, because the ablution is included in the full ritual bath, and touching the private parts does not invalidate the full ritual bath. The lesser state of impurity entered into the greater state, and the ruling of the greater state applies, so it does not harm you. However, if you performed the ablution first and then touched your back directly with your hand without need, the ablution is invalid, so you must repeat the ablution.