Shariah rules about divorce and separation

Using ambiguous/unclear words

If someone says: 'Go to your mother' or such words and does not actually divorce his wife, then these words are about the future and mean a promise.  The ruling of the Shariah is that a promise to divorce does not constitute a divorce.

In this case, a divorce is not affected on the wife.  As given in Bahjatul Mushtaaq Fi Ahkamit Talaq, Pg.  No.  13.