All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.
It is not correct to say that early marriage is harmful for girls; rather, it is absolutely the contrary. It is enough evidence that this is proven from the Book of Allaah and the Sunnah of the Prophet and the companions did so. If something is proven to be Islamicly legislated, then this is evidence that it is beneficial for the human beings. Therefore, a Muslim should not take into consideration the claims that contradict the Sharee’ah (the Islamic Law).
As regards the matter of sexual intercourse, the jurists stated that the guardian (of the girl) should not allow the husband to consummate the marriage with the girl with whom the marriage contract has been conducted, and her husband is not allowed to consummate the marriage with her, until she physically becomes able to have sexual intercourse; for more benefit in this regard, please refer to Fatwa 88199.
As regards studying and obtaining a degree or certificate, then marriage does not prevent the girl from continuing her studies if she wishes to continue. The reality proves this. Furthermore, the issue of provision is in the Hands of Allaah. Indeed, many women who lost their husbands found the reasons of provision which they did not find when their husbands were alive. Therefore, one should not be obsessed by this.
For more benefit, please refer to Fatwa 84534.
As regards bearing the responsibility at home, in general the girl learns about this when she is with her mother, and the mother should be concerned about this when her daughter is with her. In addition to this, this is something easy to learn in a short period after the girl finds herself in a separate home. The reality proves that this is not a sound reason for which marriage should be delayed.
Allaah Knows best.