Leaving one's fiancée for another man

Q 1: Is it permissible for me to allow my brother to marry my fiancée, as I am no longer interested in marriage at the present time, and she has reached the age for marriage?

A: It is permissible for you to leave her for him or any other person. After that he may marry her if she accepts him as a husband. But if you have consummated marriage, it is not permissible for him to marry her unless you divorce her and her waiting period elapses if you had intercourse with her. Moreover, she should accept him as a husband and all the other legal conditions of marriage have to be fulfilled. May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.