Hadith 4069
Sayyiduna Abu Huraira (may Allah be pleased with him) narrates that the Prophet Muhammad (peace and blessings be upon him) said: "No woman should demand the divorce of her (prospective husband's) sister (i.e., the man's first wife) in order to obtain all of her share of blessings for herself. She should marry, for she will get only what is destined for her."