Question Summary:
if a Muslim woman is involved with non muslim man his religion being “Sikh” and they want to get married…will they be allowed to get married under Shariah.

Question Detail:

I would like to find out if a Muslim woman is involved with non muslim man his religion being "Sikh" and they want to get married. both of them will not change their religions and stand firm on that point.
 
They want to get married keeping their own religions - will they be allowed to get married under Shariah.
 
 

Answer :

In the name of Allah, Most Gracious, Most Merciful
Assalaamu `alaykum waRahmatullahi Wabarakatoh
It is not permissible for a Muslim woman to marry a non-Muslim man. The marriage will not be recognized in Shariah and the relationship between the two will be regarded as Zina and adultery.  
And Allah knows best
Wassalam
Mufti Ebrahim Desai
Darul Iftaa, Madrassah In'aamiyyah