I find my self in need of moral advice, if a friend is upset over a proposal given to another friend by the man she likes, what is the proposed girl to do, should she reject him only because of her friend.
No, rejecting simply because one’s friend likes the suitor is not necessary. One may do a favour to one’s friend by letting the man know about the feelings of one’s friend, so that he may consider her. If they do not come to an agreement, then one may consider the suitor herself.
The sister in question will have to be wise here, in not letting her friendship with the other sister be affected, and at the same time exercise her own right to marry whoever she likes. She will have to go about things with using a lot of wisdom.
If she herself also wants to marry the same person, then there is nothing wrong in her considering the suitor. However, if she prefers her Muslim sister (and friend) over herself, then that will be a great act of virtue. This, of course, really depends on the intentions of the man, and whether if he would really consider the other sister.
The sister should sit down with her friend and talk things over. Discuss whether it is worth rejecting the proposal, and whether the brother will consider her friend, as to avoid none of them having the possibility of marrying him. It would be useful to find out the intentions of the man.
May Allah make things easy for everyone concerned, Insha Allah.
And Allah knows best
[Mufti] Muhammad ibn Adam
Leicester , UK