Rest your mind; calm your heart
Allah - there is no deity except Him, the Ever-Living, the Sustainer of existence.
He has sent down upon you, [O Muhammad], the Book in truth, confirming what was before it. And He revealed the Torah and the Gospel.
Before, as guidance for the people. And He revealed the Qur’an. Indeed, those who disbelieve in the verses of Allah will have a severe punishment, and Allah is exalted in Might, the Owner of Retribution.
Qur’an (2:2-4)