One of Moses prayers according to the Quran :

Taha - Verse 25-35
{
[Moses] said, "My Lord, expand for me my breast [with assurance] And ease for me my task
And untie the knot from my tongue
That they may understand my speech.
And appoint for me a minister from my family -
Aaron, my brother.Increase through him my strength And let him share my task
That we may exalt You much
And remember You much
Indeed, You are of us ever Seeing."
}