Assalam-O-Alykum,
Namaz is Fardh from the age of 10 and if some one reaches 50 years and want to do Qaza-e-Umiree though he was performing Namaz but not sure about how much left Qazaa so please tell me if he is performing Fardh Rakaat of related Namaz with every Namaz is fine as he has to perform his duties etc and what will happend if he failed to perform all Namaz.. Jazak Allah