Question Summary:
can you please tel me when the ghusl for a women become invalid and also for a man

Question Detail:

can you please tel me when the ghusl for a women become invalid and also for a man

Answer :

In the name of Allah, Most Gracious, Most Merciful
Assalaamu `alaykum waRahmatullahi Wabarakatoh
If a person, male or female has a wet dream, ejaculates or merely copulates without ejaculation with ones spouse, then the ghusal becomes invalid.
And Allah knows best
Wassalam
Mufti Ebrahim Desai

Darul Iftaa, Madrassah In'aamiyyah