A vulnerable Melbourne Muslim woman who was desperately seeking advice about her marriage has been told polygamy is better than divorce, it has been claimed.

The controversial Facebook post by a Preston mosque leader, which has since been pulled, has sparked controversy and calls for the woman to come forward. But there are fears she will not be found.

The Australian Muslim Women's Centre for Human Rights is trying to track the woman down.

Joumah El Matrah, executive director for Australian Muslim Women's Centre for Human Rights, said she and a number of other people wanted to provide the woman with alternative advice because "Muslim marriage is a partnership, it is not a woman serving a man".

‘‘We are deeply concerned by the advice provided by Preston Mosque; it reflects a poor understanding of marital discord in Muslim families,’’ Ms El Matrah said.