The Prophet (ﷺ) used to point with his finger (at the end of the tashahhud) and he would not move it.
Ibn Juraij said: "And 'Amr bin Dinar added: 'He (Ziyad) said: "'Amir informed me from his father that he saw the Prophet (ﷺ) supplicating like that. And the Prophet (ﷺ) would brace himself with his left hand on his left knee.