purification in Islam

As-Salamu `alaykum wa Rahmatullahi wa Barakatuh.Is it permissible to use a towel after making wudu’? I am asking about this because I have read a hadith stating that the Prophet (peace and blessings be upon him) did not use it. Could you please shed more light on this issue?

Dear scholars, as-salamu `alaykum. Is it necessary for females to use the bathroom before praying and performing wudu’ (ablution)? What I am asking is, can females pray without washing off the clear discharge during their non-menstrual days? Jazakum Allah khayran.

I have a quick question. I have been told that one must perform wudu’ (ablution) after taking a shower or bath. If so, then why is this necessary?

I was told that you need to recite a dua'a during ghusl but wanted to learn what is the proper way of performing ghusl. Is there a special dua'a for it? If so, what is it?