ANSWER:

This is an innovation. 

Isha

4 Fard

2 Sunnah 

As for night prayer and witr, the minimum is one and there is no max for that. 

Sheikh, i know about the 17 fard rakahs and 12 highly recommended sunnah units. Here in Pakistan for e.g we offer 17 rakahs for isha salah alone. We offer 4 units sunnah before 4 fard of esha and after 2 recommended units of esha we offer 2 nawafil as part of isha prayer. And after offering 3 witr we again offer 2 nafl as part of isha prayer! where is it mentioned to offer these

Prayer | June 30, 2018 4:32 am
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What is the ruling of rafaidain? Here in india people say that during namaz munafiq used to hide idols so prophet Muhammad sallallahu alaihiwasssalam done rafaidain. Is it correct?
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Can you do 2 nafal or more than that at any time of the day and there are no restrictions like for eg… After Asr there is no prayer until maghrib so can you pray nafal then or not????