Faraaidh and Sunnats of ghusal

Q: How should one ensure that water has reached the inner part of the ears during ghusal? Is it sufficient for one to make khilaal of the ears?

Q: For ghusal to be complete, water should reach every part of the body. If a female is not wearing ear rings, how should the water reach inside that part of the skin of the ears? Someone told me that a female should use a pointed thing like a needle,or something and make it wet and put it inside the pierced part. Is this true?

Q: Is ghusul valid with a pain patch on if it was forgotten on the body? I only realised it was on my back hours later.

Q: Will a person's ghusal be valid if he didn't do the faraa'idh (i.e. put water in the nostrils etc.)? 

Q: What is the obligaition of the gusul (bath). Please explain it.

Q: Can I pray without ghusl because I was stuck in a situation that at that time I was short of time, i.e. if I do ghusl I will miss Salah. Can I pray by just doing wudu?

Q: (I don't know whether I am a hanfi, shafi etc, so please answer accordingly)

The ghusl/ritual bath that we perform to become paak after menses, etc. have three farz/compulsory acts: washing mouth, cleaning nose, and pouring water all over the body. So if we perform ONLY and only these three acts and NOT perform the remaining acts like performing "Wuzu", washing wrists (not the one in wuzu), doing niyyat, etc. will our ghusl be valid and will we become paak?

Also, if I only perform these three acts and that too not in proper order (for example I wash my mouth and nose in the end or any other order), will my ghusl be valid and will my namaz be accepted?

Q: Is it necessary to rub the whole body during gusl or it is enough for water to flow over the body?

Q: Does making only ghusal suffice for wudhu or should I makes wudhu separately?

Q: If we miss Khilaal of the feet during Fard Ghusl, but we pour water on both feet. Is our Ghusl completed or not?