While praying the Isha Qazaa-i-Umri, do we have to pray the Farz and Witr together. Sometimes I pray Farz for Isha Qazaa-i-Umri but leave the Witr, so the next day, do I have to first pray the Witr left on the day before or can I pray the next Farz Qaza and then the two Qaza Witr after that? How many times do I have to say the Kalama Tayyiba (is it 70,000 times or 75,000 times) in order to save it for my hereafter? Once I do the Kalama required number of times for myself, can I do it again and ask Allah Ta’ala to deliver its Sawaab to all of my deceased relatives at a single time, or it has to be said separately for every relative?

but you still have to make both of them up. However many Ishas and Witrs you may have missed, you have to make them all up. Because there is a possibility of forgetting is better to pray both of them together. The wazifaa that you have mentioned is found to be a 70,000 times one. Also, you don’t have to read these things separate; you can read them together and make the intention of giving the reward at one time.