In answer to tls, without claiming to be knowledgeable, anthropomorphism is the big sin of attributing human qualities or form to Allah.
In the universally respected Aqeedah Tahawiyyah it states of Allah...
There is nothing like Him 3
No imagination can conceive of Him and no understanding can comprehend him 8
He is different from any created being 9
Anyone who describes Allah as being in any way the same as a human being is an unbeliever... 34
He is beyond having limits placed upon Him, or being restricted, or having parts or limbs, Nor is He contained by the six directions as all created things are 38