Regarding a non-pubescent girl’s marriage, my master A’lā Ḥaḍrat, Imām-e-Aĥl-e-Sunnat, Maulānā Shāĥ Imām Aḥmad Razā Khān عَـلَيْهِ رَحْمَةُ الـرَّحْمٰن wrote on page 717, volume 11 of Fatāwā Razawiyyaĥ: If she has not reached puberty and she is married to the boy – who is inferior to her – by a guardian other than her father or grandfather, even if it is her real brother, paternal uncle or mother, then this marriage is invalid and rejected. Even a father and grandfather can only marry a non-pubescent girl once (to an inferior boy), if they marry any other daughter to an inferior boy then that (second) marriage will be invalid.
Question: A woman married a man without her guardian’s permission. At the time of marriage he was Kufw for her but later became indecent and began to publicly drink alcohol, does this affect their marriage?
Answer: Kufw is required only at the time of marriage. In this case, the groom was Kufw for the bride at the time of marriage. Therefore, the marriage is valid, the husband’s later change of character does not affect their marriage. Fatāwā Razawiyyaĥ states: Kufw is required at the beginning of the marriage. If Kufw exists at that time but vanishes later on, this causes no effect.
(Fatāwā Razawiyyaĥ, vol. 11, pp. 704)
Question: Zayd convinced Bakr that he was Bakr’s Kufw, Bakr believed him and, based on this, married his non-pubescent daughter Ĥindaĥ to Zayd. A few days after the marriage, Bakr realised that Zayd is not Kufw to him. Is this marriage valid or not?
Answer: If a girl’s guardians marry her with the condition that the groom is Kufw, but later it was discovered that he was not Kufw, then according to the issued Fatwā, this marriage is invalid.
(Fatāwā Razawiyyaĥ, vol. 11, pp. 725-728)