Completing qadha salaah after the iqaamah is called out for salaah
Q:
1. If I am offering my qadha namaz and iqamah is called for the next prayer, do I have to stop praying qadha?
2. If I prayed full qadha namaz in this situation, is my qaza prayer valid?
3. What if I am just about to complete my qadha prayer and iqamah is called for the next prayer?