Is raising the index finger during the tashahhud specific to the prayer?

Question:
He says: Honorable Shaykh, may Allah grant you success, is raising the index finger during the tashahhud prescribed in the prayer and in other contexts, or is it specific to the prayer only?

Answer:
When mentioning Allah (Mighty and Majestic), when mentioning Allah, one raises the index finger as a sign of tawhid (the oneness of Allah) in the prayer and in other contexts. Yes.