In this letter we see al‑Husayn claiming on behalf of ahl al‑bait that they hold the wilaya, (authority from God), that they are the stipulated successors of the Prophet (wasiya) as well as being the rightful inheritors of his authority. Furthermore implicit in al‑Husayn’s summons to the sunna of the Prophet is the idea that ahl al‑bait know the Prophet’s example and how to follow it.
- 1. Tabari, II 240.