Allah is the only One Who created and maintains all things. Allah is not in need of help or assistance in His Lordship over creation. Muslims reject any suggestion that Allah has partners who share in His actions.
On this point, the Quran says:

"Say: 'Who is it that provides you with sustenance out of heaven and earth, or who is it that has full power over [your] hearing and sight? And who is it that brings forth the living out of that which is dead, and brings forth the dead out of that which is alive? And who is it that governs all that exists?" And they will [surely] answer: "[It is] God." (10:31)