Qadha of the witr salaah if the esha salaah was not valid
Q: A person performed his esha and witr salaah on a particular day. Later, he realized that his esha salaah was not valid (after the time for esha and witr had expired). Should he just perform the qadha of esha (since it was invalid) or should he also perform the qadha of witr (even though he performed witr correctly)?