The Prophet ﷺ said that Allah said, "The son of Adam denied Me, though he had no right to do so, and he insulted Me, though he had no right to do so. As for his denial of Me, it is his saying, 'He will never bring me back as He first created me,' though the initial creation is no easier for Me than bringing him back. As for his insult against Me, it is his saying, 'Allah has taken a son,' while I am the One, the Eternal Refuge. I have not begotten, nor was I begotten, and there is none equal to Me."
عن النبي ﷺ قال: قال الله: كذبني ابن آدم ولم يكن له ذلك، وشتمني ولم يكن له ذلك، فأما تكذيبه إياي فقوله: لن يعيدني كما بدأني. وليس أول الخلق بأهون علي من إعادته، وأما شتمه إياي فقوله: اتخذ الله ولدا. وأنا الأحد الصمد لم ألد ولم أولد، ولم يكن لي كفؤا أحد.