1) he must start observing hijab and salah at the age of nine lunar years.
2) If no ejaculation takes place in the case of a man and discharge in the case of a female no Ghusul is required. Only Sayed Fadlullah says that a woman does not have a similar ejaculation like a man and therefore she does not require a Ghusul regardless except after intercourse. Sayyed Sistani says if a woman engages in foreplay and she has a discharge or sees a wet dream then in both cases she needs to have Ghusul