بسم الله الرحمن الرحيم
(Fatwa: 5/32/L=01/1437)
Adult boy or girl can solemnize their nikah without the permission of parents. However, it is not good for them to go with their nikah without the permission of their parents. As such kinds of nikah does not carry goodness. Hence if the boy wants to marry then he should do so with the consent of his parents.
Allah knows Best!
Darul Ifta,
Darul Uloom Deoband
