What is the ruling on the ablution of one who touches his wife without a barrier?
In the Shafi'i school, a man's ablution is invalidated by touching his wife if their skins meet (in any place) without a barrier, whether the touch is intentional or accidental. An exception to this is touching hair, teeth, or nails; these do not invalidate ablution. And Allah the Almighty knows best.
What is the ruling on wiping the white area behind the ears instead of wiping the head?
The obligation in ablution is to wipe some of the head; it is not a condition to wipe all of it. Wiping the white area behind the ears suffices for that. And Allah the almighty knows best.
Is Zakah due on the orphan`s money?
Yes, Zakah is due on the money of the orphan.
What is the ruling on someone who fasts but does not pray?
A Muslim must be diligent in fulfilling all obligations, and after the Shahadah, prayer is the most important duty.
● If someone abandons prayer out of disregard, they are considered a disbeliever, and their fasting is not accepted.
● If they abandon prayer out of laziness, they are still a Muslim, and their fasting remains valid, but they have committed a grave sin by neglecting prayer.