Supplication of the Greatest Name by Testimony

“O Allah, I ask of You by virtue of these things which I bear witness to: You are Allah, there is no god but You, You are One, You are the Self-Sufficient, You neither beget nor are begotten, You have no equal or likeness.” Upon this, the Prophet (peace and blessings be upon him) said: “By Him in Whose power holds my soul, this man has asked Allah by the Greatest Name. Know that whoever prays by the Greatest Name, Allah will answer him, and whoever asks by it, Allah will surely grant him what he desires.” (Tirmidhi, Da’avat 65, (3471), Abu Dawud, Salat 358, (1493))