Does the Muqtadi have to Complete the Du'aa Qunoot?

Q: Salaah-657: The Imaam proceeded for Ruku when the Muqtadi was still reciting the Du'aa Qunoot. What should the Muqtadi do?

Answer: The Muqtadi has to follow the Imaam in this case. What he had already recited of the Du'aa Qunoot will suffice.t And Allaah knows best what is most correct.

Fatawa Rahimiyyah vol.2