Regarding moving the finger or pointing with it without moving in tashahhud
Question: Regarding moving the index finger (of the right hand) in the tashahhud position; Should it be moving or is it sufficient to just point without moving?
Response: Both of them are from the Sunnah of the Prophet (sal-Allaahu ‘alayhe wa sallam), whilst it is better to move (it).
Shaykh `Abdur-Razzaaq `Afeefee
Fataawa wa Rasaa.il Shaykh `Abdur-Razzaaq `Afeefee – Page 411, Fatwa No.23 source: fatwaonline.com