Allah -azwj has Mentioned you all in His -azwj Book.

Allah -azwj has Mentioned you all in His -azwj Book. He -azwj Said: so they are those upon whom Allah has Bestowed Favours from the Prophets and the Truthful and the Martyrs and the Righteous; and a goodly company are they! [4:69].

So Rasool-Allah -saww in the Verse is \u2018 from the Prophet s \u2019, and we -asws , in this place are the \u2018 truthful and the martyrs \u2019, and you (Shias) are the \u2018 righteous \u2019, therefore adopt this name by the righteousness as Allah -azwj Mighty and Majestic has Named you\u2019.