Reference: Fataawa wa Rasaa.il Shaykh ‘Abdur-Razzaaq ‘Afeefee – Volume 1, Page 188-189, Fatwa No.19
Question: What is the ruling regarding moving the [index] finger [of the right hand] during the tashahhud?
Should it be moving or is it sufficient to point without moving it?
Response: Whilst it is better to move [the finger], both are from the Sunnah of the Prophet ﷺ.