Narrated Abu Huraira: Allah's Messenger (ﷺ) said, "Allah said:-- 'The son of Adam tells a lie against Me and he hasn't the right to do so; and he abuses me and he hasn't the right to do so. His telling a lie against Me is his saying that I will not recreate him as I created him for the first time; and his abusing Me is his saying that Allah has begotten children, while I am the self-sufficient Master, Whom all creatures need, Who begets not nor was He begotten, and there is none like unto Me."
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا إِسْحَاقُ بْنُ مَنْصُورٍ، قَالَ وَحَدَّثَنَا عَبْدُ الرَّزَّاقِ، أَخْبَرَنَا مَعْمَرٌ، عَنْ هَمَّامٍ، عَنْ أَبِي هُرَيْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " قَالَ اللَّهُ كَذَّبَنِي ابْنُ آدَمَ وَلَمْ يَكُنْ لَهُ ذَلِكَ، وَشَتَمَنِي وَلَمْ يَكُنْ لَهُ ذَلِكَ، أَمَّا تَكْذِيبُهُ إِيَّاىَ أَنْ يَقُولَ إِنِّي لَنْ أُعِيدَهُ كَمَا بَدَأْتُهُ، وَأَمَّا شَتْمُهُ إِيَّاىَ أَنْ يَقُولَ اتَّخَذَ اللَّهُ وَلَدًا، وَأَنَا الصَّمَدُ الَّذِي لَمْ أَلِدْ وَلَمْ أُولَدْ وَلَمْ يَكُنْ لِي كُفُؤًا أَحَدٌ ". {لَمْ يَلِدْ وَلَمْ يُولَدْ * وَلَمْ يَكُنْ لَهُ كُفُؤًا أَحَدٌ} كُفُؤًا وَكَفِيئًا وَكِفَاءً وَاحِدٌ.
sunnah.com