Answered by: Mufti Eunus Ali
Can I marry a girl whose nikah is over?
بسم الله الرحمن الرحيم
It will be permissible to marry a woman who has been divorced and has also completed her waiting period (iddah) of 3 menstrual cycles. It will not be permissible before this.
It is equally important to note that if the woman is merely ‘separated’ from her husband and the formal Islamic method of divorce has not taken place; it will not be permissible to marry that woman.
Only Allah knows best
Written by Mufti Eunus Ali
Checked and approved by Mufti Mohammed Tosir Miah
Darul Ifta Birmingham
 Al Fatawa Al Hindiyyah, Volume 1, Page 552, Darul Kutubul Ilmiyyah