Qur'an, Saba', Surah 34:48-50
I declare that my Lord reveals the truth; he knows all that is hidden. I declare that the truth has come; falsehood has departed, and will never return. I declare that, if I am in error, the fault is surely mine; but if I am right, it is because the Lord has revealed to me the truth. The Lord hears all, and is close at hand.