Answered by Shaykh Amjad Rasheed
If a woman does not have children, does her former husband have to support her after the waiting-period (idda) ends?
It is not obligatory for a man to financially support a woman with whom his marriage has ended, after the waiting period (idda) is over. This is irrespective of whether or not she has children.
As for supporting the children: if they themselves do not have money to their name, financially supporting them is obligatory upon the father, whether he is with their mother or not.
And Allah alone gives success.