Divine grace
In Shia theology Ismah means "impeccability", "immunity to sin" and "infallibility. " When Ismah is attributed to human beings, the concept means "the ability of avoiding acts of disobedience, in spite of having the power to commit them, " As in Prophets and Imams, Ismah is a Divine grace realized by God's preservation of the infallible, first by endowing them with pure constitution then, following in order, by blessing them with great excellences, giving them firm will against opponents, sending tranquility down upon them ("as-Sakinah"), and preserving their hearts and minds from sin.