If you have no source of income, you could pursue your case through any of the legal aid cells in the courts. If your husband does not show his income statement, the court may draw adverse inference against him and rely upon your statement regarding his income (the onus of proving his income lies on him). As far as finding out his pension or provident fund amount is concerned, you could write to his higher authority, but his office will ask for a court order to reveal the details.