What is the position of the index finger after completing the first tashahhud in prayer behind the imam, and what is said if the imam is still reciting the tashahhud?

It is prescribed for every worshiper to point with their index finger throughout the Tashahhud, whether they are an Imam, praying alone, or a follower. If they are a follower, they should not stop pointing until the Imam says the taslim in the final Tashahhud, or stands up for the third rak'ah in the first Tashahhud. If the Imam prolongs the first Tashahhud, it is prescribed for the follower to invoke blessings upon the Prophet (peace and blessings be upon him), and they may recite the complete Ibrahimiya supplication, or any other supplication they wish, because silence is not prescribed in prayer.