Q: A girl gets married (nikah) secretly with witnesses (2 girls and one boy) but we don’t even know if the boy is baalig (mature) or not. Is the marriage valid in this case?
A: For a Nikah to be valid:
Both boy and girl must be Baaligh and sane. The girl must grant her permission to get her married to that particular boy. The boy must accept. At least two witnesses should be present. The two witnesses should also hear the declaration and the acceptance. The witnesses should be two males or one male and two females.
Moulana Yusuf Laher