What is the authentic Hadith proof for the Hanafi position regarding the finger placement in Tashahhud.

Answer

We are Muqallideen of Imaam Abu Hanifah (Rahmatullah alayh). We are not Mujtahids. We follow the teachings of the Shariah as these have been transmitted reliably down the passage of time from the authorities of the Hanafi Math-hab. We do not deduct masaa-il from Ahaadith. That is not our function nor is it the function of morons who seek proof, but lack knowledge of the masaa-il of Istinja.